drm/xe/queue: Call fini on exec queue creation fail

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/queue: Call fini on exec queue creation fail

Every call to queue init should have a corresponding fini call.

Skipping this would mean skipping removal of the queue from GuC list

(which is part of guc_id allocation). A damaged queue stored in

exec_queue_lookup list would lead to invalid memory reference,

sooner or later.

Call fini to free guc_id. This must be done before any internal

LRCs are freed.

Since the finalization with this extra call became very similar to

__xe_exec_queue_fini(), reuse that. To make this reuse possible,

alter xe_lrc_put() so it can survive NULL parameters, like other

similar functions.

v2: Reuse _xe_exec_queue_fini(). Make xe_lrc_put() aware of NULLs.

(cherry picked from commit 393e5fea6f7d7054abc2c3d97a4cfe8306cd6079)