[PATCH v2 06/10] nvdimm/btt: add error handling support for add_disk()

[Luis Chamberlain <mcgrof@xxxxxxxxxx>]

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 <mcgrof@xxxxxxxxxx>
---
 drivers/nvdimm/btt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 23ee8c005db5..57b921c5fbb5 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1542,7 +1542,9 @@ static int btt_blk_init(struct btt *btt)
        }
 
        set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9);
-       device_add_disk(&btt->nd_btt->dev, btt->btt_disk, NULL);
+       rc = device_add_disk(&btt->nd_btt->dev, btt->btt_disk, NULL);
+       if (rc)
+               goto out_cleanup_disk;
 
        btt->nd_btt->size = btt->nlba * (u64)btt->sector_size;
        nvdimm_check_and_set_ro(btt->btt_disk);
-- 
2.30.2