wifi: mt76: mt7996: fix locking in mt7996_mac_sta_rc_work()

JIRA: https://issues.redhat.com/browse/RHEL-89169

commit 1794d7a
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Wed Mar 19 19:44:25 2025 +0100

    wifi: mt76: mt7996: fix locking in mt7996_mac_sta_rc_work()
    
    The 'continue' statements need to be under spinlock, since
    the spinlock needs to be held as a loop invariant.
    
    Fixes: 0762bdd ("wifi: mt76: mt7996: rework mt7996_mac_sta_rc_work to support MLO")
    Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>

Author: jtornosm

drivers/net/wireless/mediatek/mt76/mt7996/mac.c

@@ -2334,7 +2334,6 @@ void mt7996_mac_sta_rc_work(struct work_struct *work)
 
 		changed = msta_link->changed;
 		msta_link->changed = 0;
-		spin_unlock_bh(&dev->mt76.sta_poll_lock);
 
 		sta = wcid_to_sta(&msta_link->wcid);
 		link_id = msta_link->wcid.link_id;
@@ -2354,6 +2353,8 @@ void mt7996_mac_sta_rc_work(struct work_struct *work)
 		if (!link_conf)
 			continue;
 
+		spin_unlock_bh(&dev->mt76.sta_poll_lock);
+
 		link = (struct mt7996_vif_link *)mlink;
 
 		if (changed & (IEEE80211_RC_SUPP_RATES_CHANGED |