On Mon, May 18, 2020 at 08:36:06PM +0800, Wu Bo wrote:

From: Wu Bo <redacted>

If a call of the function blkg_lookup_check() failed,
we should be release the previously allocated block group 
before jumping to the lable 'fail_unlock' in the implementation of 
the function blkg_conf_prep().

Suggested-by: Markus Elfring <redacted>
Signed-off-by: Wu Bo <redacted>

Acked-by: Tejun Heo <tj@kernel.org>

Thanks.

-- 
tejun