NFC: delete null dereference

The exit label performs device_unlock(&dev->dev);, which will fail when dev
is NULL, and nfc_put_device(dev);, which is not useful when dev is NULL, so
just exit the function immediately.

Problem found using scripts/coccinelle/null/deref_null.cocci

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 853172c27f68..f04053295ff1 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1109,10 +1109,8 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
         idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
 
         dev = nfc_get_device(idx);
-        if (!dev) {
-                rc = -ENODEV;
-                goto exit;
-        }
+        if (!dev)
+                return -ENODEV;
 
         device_lock(&dev->dev);