[syzbot] general protection fault in dma_fence_array_first

[syzbot]

Hello,

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

Reported-and-tested-by: syzbot+5c943fe38e86d615cac2 at syzkaller.appspotmail.com

Tested on:

commit:         c2528a0c Add linux-next specific files for 20220329
git tree:       linux-next
kernel config:  https://syzkaller.appspot.com/x/.config?x=88d1370cc1f241e6
dashboard link: https://syzkaller.appspot.com/bug?extid=5c943fe38e86d615cac2
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=128372e7700000

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