[v6.6] BUG: Bad page state in z_erofs_do_read_page

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+b6353e35ae2bab997538 at syzkaller.appspotmail.com
Tested-by: syzbot+b6353e35ae2bab997538 at syzkaller.appspotmail.com

Tested on:

commit:         4fc00fe3 Linux 6.6.129
git tree:       linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=135ff6da580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=cf30d9e358c58220
dashboard link: https://syzkaller.appspot.com/bug?extid=b6353e35ae2bab997538
compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1029ecba580000

Note: testing is done by a robot and is best-effort only.