usb: gadget: f_ecm: fix missing unlock on error in ecm_alloc()

Add the missing unlock before return from function ecm_alloc()
in the error handling case.

Introduced by commit da92801c647cdebfd45001fd6aaecb8f0be7f56b.
(usb: gadget: f_ecm: add configfs support)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index fcafe1af4585..5d3561ea1c15 100644
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -1012,6 +1012,7 @@ struct usb_function *ecm_alloc(struct usb_function_instance *fi)
                                           sizeof(ecm->ethaddr));
         if (status < 12) {
                 kfree(ecm);
+                mutex_unlock(&opts->lock);
                 return ERR_PTR(-EINVAL);
         }
         ecm_string_defs[1].s = ecm->ethaddr;