raid5-cache: move reclaim stop to quiesce

Move reclaim stop to quiesce handling, where is safer for this stuff.

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index a622ccb..216fa3c 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7582,6 +7582,7 @@
 		unlock_all_device_hash_locks_irq(conf);
 		break;
 	}
+	r5l_quiesce(conf->log, state);
 }
 
 static void *raid45_takeover_raid0(struct mddev *mddev, int level)