jbd2: remove redundant buffer io error checks

mainline inclusion
from mainline-5.14-rc1
commit 214eb5a4
category: bugfix
bugzilla: 50788
CVE: NA
---------------------------

Now that __jbd2_journal_remove_checkpoint() can detect buffer io error
and mark journal checkpoint error, then we abort the journal later
before updating log tail to ensure the filesystem works consistently.
So we could remove other redundant buffer io error checkes.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210610112440.3438139-5-yi.zhang@huawei.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Yang Erkun <yangerkun@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>