usb/gadget: free opts struct on error recovery

Fix memory leaks introduced in commits:

40d133d7f542616cf9538508a372306e626a16e9
usb: gadget: f_ncm: convert to new function interface with backward compatibility

fee562a6450b7806f1fbbe1469a67b5395b5c10a
usb: gadget: f_ecm: convert to new function interface with backward compatibility

fcbdf12ebef73a6069e2a1aada1e546fb578a4aa
usb: gadget: f_phonet: convert to new function interface with backward compatibility

b29002a157940752dfed2c488b2011f63f007d71
usb: gadget: f_eem: convert to new function interface with backward compatibility

8cedba7c73af1369599b1111639cfeb66fe13aaa
usb: gadget: f_subset: convert to new function interface with backward compatibility

f466c6353819326873fa48a02c6f2d7c903240d6
usb: gadget: f_rndis: convert to new function interface with backward compatibility

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

6 files changed, 30 insertions, 12 deletions

diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index 5d3561ea1c15..edab45da3741 100644
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -959,8 +959,11 @@ static struct usb_function_instance *ecm_alloc_inst(void)
         mutex_init(&opts->lock);
         opts->func_inst.free_func_inst = ecm_free_inst;
         opts->net = gether_setup_default();
-        if (IS_ERR(opts->net))
-                return ERR_PTR(PTR_ERR(opts->net));
+        if (IS_ERR(opts->net)) {
+                struct net_device *net = opts->net;
+                kfree(opts);
+                return ERR_CAST(net);
+        }
 
         config_group_init_type_name(&opts->func_inst.group, "", &ecm_func_type);
 
diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index 90ee8022e8d8..d00392d879db 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -593,8 +593,11 @@ static struct usb_function_instance *eem_alloc_inst(void)
         mutex_init(&opts->lock);
         opts->func_inst.free_func_inst = eem_free_inst;
         opts->net = gether_setup_default();
-        if (IS_ERR(opts->net))
-                return ERR_CAST(opts->net);
+        if (IS_ERR(opts->net)) {
+                struct net_device *net = opts->net;
+                kfree(opts);
+                return ERR_CAST(net);
+        }
 
         config_group_init_type_name(&opts->func_inst.group, "", &eem_func_type);
 
diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c
index 952177f7eb9b..1c28fe13328a 100644
--- a/drivers/usb/gadget/f_ncm.c
+++ b/drivers/usb/gadget/f_ncm.c
@@ -1350,8 +1350,11 @@ static struct usb_function_instance *ncm_alloc_inst(void)
         mutex_init(&opts->lock);
         opts->func_inst.free_func_inst = ncm_free_inst;
         opts->net = gether_setup_default();
-        if (IS_ERR(opts->net))
-                return ERR_PTR(PTR_ERR(opts->net));
+        if (IS_ERR(opts->net)) {
+                struct net_device *net = opts->net;
+                kfree(opts);
+                return ERR_CAST(net);
+        }
 
         config_group_init_type_name(&opts->func_inst.group, "", &ncm_func_type);
 
diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c
index 7944fb0efe3b..1bf26e9f38cd 100644
--- a/drivers/usb/gadget/f_phonet.c
+++ b/drivers/usb/gadget/f_phonet.c
@@ -656,8 +656,11 @@ static struct usb_function_instance *phonet_alloc_inst(void)
 
         opts->func_inst.free_func_inst = phonet_free_inst;
         opts->net = gphonet_setup_default();
-        if (IS_ERR(opts->net))
-                return ERR_PTR(PTR_ERR(opts->net));
+        if (IS_ERR(opts->net)) {
+                struct net_device *net = opts->net;
+                kfree(opts);
+                return ERR_CAST(net);
+        }
 
         config_group_init_type_name(&opts->func_inst.group, "",
                         &phonet_func_type);
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index 191df35ae69d..717ed7f95639 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -963,8 +963,11 @@ static struct usb_function_instance *rndis_alloc_inst(void)
         mutex_init(&opts->lock);
         opts->func_inst.free_func_inst = rndis_free_inst;
         opts->net = gether_setup_default();
-        if (IS_ERR(opts->net))
-                return ERR_CAST(opts->net);
+        if (IS_ERR(opts->net)) {
+                struct net_device *net = opts->net;
+                kfree(opts);
+                return ERR_CAST(net);
+        }
 
         config_group_init_type_name(&opts->func_inst.group, "",
                                     &rndis_func_type);
diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c
index 5601e1d96c4f..7c8674fa7e80 100644
--- a/drivers/usb/gadget/f_subset.c
+++ b/drivers/usb/gadget/f_subset.c
@@ -505,8 +505,11 @@ static struct usb_function_instance *geth_alloc_inst(void)
         mutex_init(&opts->lock);
         opts->func_inst.free_func_inst = geth_free_inst;
         opts->net = gether_setup_default();
-        if (IS_ERR(opts->net))
-                return ERR_CAST(opts->net);
+        if (IS_ERR(opts->net)) {
+                struct net_device *net = opts->net;
+                kfree(opts);
+                return ERR_CAST(net);
+        }
 
         config_group_init_type_name(&opts->func_inst.group, "",
                                     &gether_func_type);