btrfs: use q which is already obtained from bdev_get_queue

We have already assigned q from bdev_get_queue() so use it.
And rearrange the code for better view.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2017-04-04 18:40:19 +08:00 • committed by David Sterba
commit e884f4f06e