wireless/mediatek: Replace rcu_swap_protected() with rcu_replace_pointer()

This commit replaces the use of rcu_swap_protected() with the more
intuitively appealing rcu_replace_pointer() as a step towards removing
rcu_swap_protected().

Link: https://lore.kernel.org/lkml/CAHk-=wiAsJLw1egFEE=Z7-GGtM6wcvtyytXZA1+BHqta4gg6Hw@mail.gmail.com/
Reported-by: Linus Torvalds <[email protected]>
Reported-by: "Martin K. Petersen" <[email protected]>
[ paulmck: Apply Matthias Brugger feedback. ]
Signed-off-by: Paul E. McKenney <[email protected]>
Reviewed-by: "Martin K. Petersen" <[email protected]>
Acked-by: Kalle Valo <[email protected]>
Cc: Felix Fietkau <[email protected]>
Cc: Lorenzo Bianconi <[email protected]>
Cc: Ryder Lee <[email protected]>
Cc: Roy Luo <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Matthias Brugger <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>

Author: paulmckrcu

drivers/net/wireless/mediatek/mt76/agg-rx.c

@@ -281,8 +281,8 @@ void mt76_rx_aggr_stop(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tidno)
 {
 	struct mt76_rx_tid *tid = NULL;
 
-	rcu_swap_protected(wcid->aggr[tidno], tid,
-			   lockdep_is_held(&dev->mutex));
+	tid = rcu_replace_pointer(wcid->aggr[tidno], tid,
+				  lockdep_is_held(&dev->mutex));
 	if (tid) {
 		mt76_rx_aggr_shutdown(dev, tid);
 		kfree_rcu(tid, rcu_head);