f2fs: clean up destroy_discard_cmd_control

Remove unneeded parameter and simply change flow in
destroy_discard_cmd_control.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-03-27 18:14:04 +08:00 • committed by Jaegeuk Kim
commit f099405fc8