mt76: toggle driver station powersave bit before notifying mac80211

Avoids race conditions from mac80211 enqueueing tx packets before the
tx-drop bit is cleared

Signed-off-by: Felix Fietkau <nbd@nbd.name>

mac80211.c

@@ -514,8 +514,8 @@ mt76_check_ps(struct mt76_dev *dev, struct sk_buff *skb)
 		clear_bit(MT_WCID_FLAG_PS, &wcid->flags);
 	}
 
-	ieee80211_sta_ps_transition(sta, ps);
 	dev->drv->sta_ps(dev, sta, ps);
+	ieee80211_sta_ps_transition(sta, ps);
 }
 
 void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,