mac80211: fix potential NULL dereference

Smatch complains that we could dereference skb later in the function.
It's probably unlikely, but we may as well return here and avoid it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[change summary]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 9b13b8b..db343fa 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -49,7 +49,7 @@ static struct sk_buff *remove_monitor_info(struct ieee80211_local *local,
                        /* driver bug */
                        WARN_ON(1);
                        dev_kfree_skb(skb);
-                       skb = NULL;
+                       return NULL;
                }
        }