mac80211: common work skb freeing

All the management processing functions free the
skb after they are done, so this can be done in
the new common code instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 2f828ff..4a5b29d 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1754,7 +1754,7 @@
 		default:
 			WARN(1, "unexpected: %d", rma);
 		}
-		goto out;
+		return;
 	}
 
 	mutex_unlock(&ifmgd->mtx);
@@ -1762,9 +1762,6 @@
 	if (skb->len >= 24 + 2 /* mgmt + deauth reason */ &&
 	    (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DEAUTH)
 		cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
-
- out:
-	kfree_skb(skb);
 }
 
 static void ieee80211_sta_timer(unsigned long data)