Re: [syzbot] [mtd?] WARNING in release_mtd_partition

[Edward Adam Davis <eadavis@qq.com>]

#syz test

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 724f917f91ba..a71cd75858e4 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -741,7 +741,8 @@ int add_mtd_device(struct mtd_info *mtd)
 	mtd->dev.type = &mtd_devtype;
 	mtd->dev.class = &mtd_class;
 	mtd->dev.devt = MTD_DEVT(i);
-	dev_set_name(&mtd->dev, "mtd%d", i);
+	if (dev_set_name(&mtd->dev, "mtd%d", i))
+		goto fail_devname;
 	dev_set_drvdata(&mtd->dev, mtd);
 	mtd_check_of_node(mtd);
 	of_node_get(mtd_get_of_node(mtd));
@@ -790,6 +791,7 @@ int add_mtd_device(struct mtd_info *mtd)
 	device_unregister(&mtd->dev);
 fail_added:
 	of_node_put(mtd_get_of_node(mtd));
+fail_devname:
 	idr_remove(&mtd_idr, i);
 fail_locked:
 	mutex_unlock(&mtd_table_mutex);