mac80211: call skb_dequeue/ieee80211_free_txskb instead of __skb_queue_purge

Fixes more wifi status skb leaks, leading to hostapd/wpa_supplicant hangs.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 89ccd3e..3b5911e 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -117,8 +117,8 @@
 
 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 		local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]);
-		__skb_queue_purge(&sta->ps_tx_buf[ac]);
-		__skb_queue_purge(&sta->tx_filtered[ac]);
+		ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]);
+		ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]);
 	}
 
 #ifdef CONFIG_MAC80211_MESH
@@ -141,7 +141,7 @@
 		tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]);
 		if (!tid_tx)
 			continue;
-		__skb_queue_purge(&tid_tx->pending);
+		ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending);
 		kfree(tid_tx);
 	}