[PATCH 2/8] mmc: handle add_disk() return value

[Vishnu Pratap Singh <vishnu.ps@samsung.com>]

This patch handles  add_disk() return value.
Earlier add_disk() function doesn't handle error
cases, now it is added, so the callers of this function
should also handle it.

Verfied on X86 based ubuntu machine.
This patch depends on [PATCH 1/8] block/genhd.c: Add error handling

Signed-off-by: Vishnu Pratap Singh <vishnu.ps@samsung.com>
---
 drivers/mmc/card/block.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 23b6c8e..543c670 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2432,7 +2432,10 @@ static int mmc_add_disk(struct mmc_blk_data *md)
 	int ret;
 	struct mmc_card *card = md->queue.card;
 
-	add_disk(md->disk);
+	ret = add_disk(md->disk);
+	if (ret)
+		goto add_disk_fail;
+
 	md->force_ro.show = force_ro_show;
 	md->force_ro.store = force_ro_store;
 	sysfs_attr_init(&md->force_ro.attr);
@@ -2468,7 +2471,7 @@ power_ro_lock_fail:
 	device_remove_file(disk_to_dev(md->disk), &md->force_ro);
 force_ro_fail:
 	del_gendisk(md->disk);
-
+add_disk_fail:
 	return ret;
 }
 
-- 
1.9.1