ext4: delete redundant uptodate check for buffer

mainline inclusion
from mainline-v5.13-rc1
commit 3cd46171
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7D878
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3cd461712cb450ea6aa8a8200f35f24eb296bfb2



---------------------------

The buffer uptodate state has been checked in function set_buffer_uptodate,
there is no need use buffer_uptodate before calling set_buffer_uptodate and
delete it.

Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Yang Guo <guoyang2@huawei.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Link: https://lore.kernel.org/r/1617260610-29770-1-git-send-email-zhangshaokun@hisilicon.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
(cherry picked from commit 47b62d72)