mac80211: automatically free sta struct when insertion fails

When STA structure insertion fails, it has been allocated but isn't
really alive yet, it isn't reachable by any other code and also can't
yet have much configured. This patch changes the code so that when
the insertion fails, the resulting STA pointer is no longer valid
because it is freed.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index baa68575b98a..00fde111c268 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1942,7 +1942,6 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
                 if (err) {
                         printk(KERN_DEBUG "%s: failed to insert STA entry for"
                                " the AP (error %d)\n", dev->name, err);
-                        sta_info_destroy(sta);
                         rcu_read_unlock();
                         return;
                 }
@@ -4172,10 +4171,8 @@ struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
 
         rate_control_rate_init(sta, local);
 
-        if (sta_info_insert(sta)) {
-                sta_info_destroy(sta);
+        if (sta_info_insert(sta))
                 return NULL;
-        }
 
         return sta;
 }