mac80211: flush AP_VLAN stations when tearing down the BSS AP

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[change to flush stations with AP flush in second loop]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 5c61677..47e0aca 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1009,6 +1009,8 @@
 	if (old_probe_resp)
 		kfree_rcu(old_probe_resp, rcu_head);
 
+	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
+		sta_info_flush(local, vlan);
 	sta_info_flush(local, sdata);
 	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);