quota: Fix memory leak when handling corrupted quota file

mainline inclusion
from mainline-v5.12-rc1
commit a4db1072e1a3bd7a8d9c356e1902b13ac5deb8ef
category: bugfix
bugzilla: 49668
CVE: NA

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

When checking corrupted quota file we can bail out and leak allocated
info structure. Properly free info structure on error return.

Reported-by:  <syzbot+77779c9b52ab78154b08@syzkaller.appspotmail.com>
Fixes: 11c514a99bb9 ("quota: Sanity-check quota file headers on load")
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>