kernel needs to kobject_put on dev->kobj if elv_register_queue fails.

Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Nikanth Karthikesan <knikanth@suse.de>
Cc: David Teigland <teigland@redhat.com>
---
 block/blk-sysfs.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 001ab18..0749b89 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -511,6 +511,7 @@ int blk_register_queue(struct gendisk *disk)
 		kobject_uevent(&q->kobj, KOBJ_REMOVE);
 		kobject_del(&q->kobj);
 		blk_trace_remove_sysfs(disk_to_dev(disk));
+		kobject_put(&dev->kobj);
 		return ret;
 	}
 
-- 
1.7.2.1

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