mac80211: fix TID for null poll response

The queue mapping/TID for non-QoS null data
responses to is never set, making it default
to BK. Fix that.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

net/mac80211/sta_info.c

@@ -1203,11 +1203,9 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata,
 	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
 	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
 
-	if (qos) {
 	skb->priority = tid;
-
 	skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]);
-
+	if (qos) {
 		nullfunc->qos_ctrl = cpu_to_le16(tid);
 
 		if (reason == IEEE80211_FRAME_RELEASE_UAPSD)