ubi: Fix return value overwrite issue in try_write_vid_and_data()

mainline inclusion
from mainline-v6.2-rc1
commit 31a149d5
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7JO2R
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=31a149d5c13c4cbcf97de3435817263a2d8c9d6e



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

The commit 2d78aee4 ("UBI: simplify LEB write and atomic LEB change code")
adds helper function, try_write_vid_and_data(), to simplify the code, but this
helper function has bug, it will return 0 (success) when ubi_io_write_vid_hdr()
or the ubi_io_write_data() return error number (-EIO, etc), because the return
value of ubi_wl_put_peb() will overwrite the original return value.

This issue will cause unexpected data loss issue, because the caller of this
function and UBIFS willn't know the data is lost.

Fixes: 2d78aee4 ("UBI: simplify LEB write and atomic LEB change code")
Cc: stable@vger.kernel.org
Signed-off-by: Wang YanQing <udknight@gmail.com>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: ZhaoLong Wang <wangzhaolong1@huawei.com>