drm/i915: Remove i915_gem_execbuffer_retire_commands()

Move the single line to the callsite as the name is now misleading, and
the purpose is solely to add the request to the execution queue. Here,
we can see that if we failed to dispatch the batch from the request, we
can forgo flushing the GPU when closing the request.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470324762-2545-5-git-send-email-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/i915_gem_execbuffer.c

@@ -1211,13 +1211,6 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas,
 	}
 }
 
-static void
-i915_gem_execbuffer_retire_commands(struct i915_execbuffer_params *params)
-{
-	/* Add a breadcrumb for the completion of the batch buffer */
-	__i915_add_request(params->request, params->batch_obj, true);
-}
-
 static int
 i915_reset_gen7_sol_offsets(struct drm_i915_gem_request *req)
 {
@@ -1692,7 +1685,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
 
 	ret = execbuf_submit(params, args, &eb->vmas);
 err_request:
-	i915_gem_execbuffer_retire_commands(params);
+	__i915_add_request(params->request, params->batch_obj, ret == 0);
 
 err_batch_unpin:
 	/*