mt76: mt7663: fix when beacon filter is being applied

HW beacon filter command is being applied until we're in associated state
because the command would rely on the associated access point's beacon
interval and DTIM information.

Fixes: 7124198a ("mt76: mt7615: enable beacon filtering by default for offload fw")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7615/main.c

@@ -238,8 +238,6 @@ static int mt7615_add_interface(struct ieee80211_hw *hw,
 	ret = mt7615_mcu_add_dev_info(phy, vif, true);
 	if (ret)
 		goto out;
-
-	mt7615_mac_set_beacon_filter(phy, vif, true);
 out:
 	mt7615_mutex_release(dev);
 
@@ -265,7 +263,6 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw,
 
 	mt76_connac_free_pending_tx_skbs(&dev->pm, &msta->wcid);
 
-	mt7615_mac_set_beacon_filter(phy, vif, false);
 	mt7615_mcu_add_dev_info(phy, vif, false);
 
 	rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
@@ -579,6 +576,9 @@ static void mt7615_bss_info_changed(struct ieee80211_hw *hw,
 	if (changed & BSS_CHANGED_ARP_FILTER)
 		mt7615_mcu_update_arp_filter(hw, vif, info);
 
+	if (changed & BSS_CHANGED_ASSOC)
+		mt7615_mac_set_beacon_filter(phy, vif, info->assoc);
+
 	mt7615_mutex_release(dev);
 }