In fc_do_one_pass() miss release buffer head after use which will lead
to reference count leak.

Cc: stable@kernel.org
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220917093805.1782845-1-yebin10@huawei.comSigned-off-by: Theodore Ts'o <tytso@mit.edu>