diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index b37e3cd4e367..c792683a0dea 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3769,6 +3769,9 @@ static int raid10_run(struct mddev *mddev)
 	if (!conf)
 		goto out;
 
+	mddev->thread = conf->thread;
+	conf->thread = NULL;
+
 	if (mddev_is_clustered(conf->mddev)) {
 		int fc, fo;
 
@@ -3781,9 +3784,6 @@ static int raid10_run(struct mddev *mddev)
 		}
 	}
 
-	mddev->thread = conf->thread;
-	conf->thread = NULL;
-
 	if (mddev->queue) {
 		blk_queue_max_discard_sectors(mddev->queue,
 					      mddev->chunk_sectors);