firewire: suspected uaf issue

[YE Chengfeng]

Hi,

We notice that after client_put(client); at #line 1316, client is dereferenced l(e.g., #line 1318), and we don't see any client_get(client) like statement before clientt_put(client). Could it be a uaf issue?

https://github.com/torvalds/linux/blob/master/drivers/firewire/core-cdev.c#L1316

Best regards.
Chengfeng