md/raid1: don't free conf on raid0_run failure

JIRA: https://issues.redhat.com/browse/RHEL-83988

commit 799af94
Author: Christoph Hellwig <hch@lst.de>
Date:   Thu Jun 13 10:48:13 2024 +0200

    md/raid1: don't free conf on raid0_run failure

    The core md code calls the ->free method which already frees conf.

    Fixes: 07f1a68 ("md/raid1: fail run raid1 array when active disk less than one")
    Signed-off-by: Christoph Hellwig <hch@lst.de>
    Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
    Link: https://lore.kernel.org/r/20240613084839.1044015-4-hch@lst.de
    Signed-off-by: Jens Axboe <axboe@kernel.dk>

Signed-off-by: Nigel Croxon <ncroxon@redhat.com>

Author: ncroxon

drivers/md/raid1.c

@@ -3220,7 +3220,6 @@ static int raid1_set_limits(struct mddev *mddev)
 	return queue_limits_set(mddev->gendisk->queue, &lim);
 }
 
-static void raid1_free(struct mddev *mddev, void *priv);
 static int raid1_run(struct mddev *mddev)
 {
 	struct r1conf *conf;
@@ -3254,7 +3253,7 @@ static int raid1_run(struct mddev *mddev)
 	if (!mddev_is_dm(mddev)) {
 		ret = raid1_set_limits(mddev);
 		if (ret)
-			goto abort;
+			return ret;
 	}
 
 	mddev->degraded = 0;
@@ -3268,8 +3267,7 @@ static int raid1_run(struct mddev *mddev)
 	 */
 	if (conf->raid_disks - mddev->degraded < 1) {
 		md_unregister_thread(mddev, &conf->thread);
-		ret = -EINVAL;
-		goto abort;
+		return -EINVAL;
 	}
 
 	if (conf->raid_disks - mddev->degraded == 1)
@@ -3293,14 +3291,8 @@ static int raid1_run(struct mddev *mddev)
 	md_set_array_sectors(mddev, raid1_size(mddev, 0, 0));
 
 	ret = md_integrity_register(mddev);
-	if (ret) {
+	if (ret)
 		md_unregister_thread(mddev, &mddev->thread);
-		goto abort;
-	}
-	return 0;
-
-abort:
-	raid1_free(mddev, conf);
 	return ret;
 }