drm/i915: Wait for active retire before i915_active_fini()

i915_active_fini() finalizes the debug object, which can occur before
the active retires and deactivates the debug object. Wait for one
final time before calling i915_active_fini();

Closes:: https://gitlab.freedesktop.org/drm/intel/-/issues/8311
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230522124205.368-1-nirmoy.das@intel.com

drivers/gpu/drm/i915/i915_vma.c

@@ -1710,6 +1710,8 @@ static void release_references(struct i915_vma *vma, struct intel_gt *gt,
 	if (vm_ddestroy)
 		i915_vm_resv_put(vma->vm);
 
+	/* Wait for async active retire */
+	i915_active_wait(&vma->active);
 	i915_active_fini(&vma->active);
 	GEM_WARN_ON(vma->resource);
 	i915_vma_free(vma);