We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Signed-off-by: Luis Chamberlain <mcg...@kernel.org>
---
 drivers/md/dm.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 7981b7287628..cd26fde4ab56 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2077,15 +2077,21 @@ int dm_setup_md_queue(struct mapped_device *md, struct 
dm_table *t)
        if (r)
                return r;
 
-       add_disk(md->disk);
+       r = add_disk(md->disk);
+       if (r)
+               goto out_cleanup_disk;
 
        r = dm_sysfs_init(md);
-       if (r) {
-               del_gendisk(md->disk);
-               return r;
-       }
+       if (r)
+               goto out_del_gendisk;
        md->type = type;
        return 0;
+
+out_cleanup_disk:
+       blk_cleanup_disk(md->disk);
+out_del_gendisk:
+       del_gendisk(md->disk);
+       return r;
 }
 
 struct mapped_device *dm_get_md(dev_t dev)
-- 
2.30.2

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