drm/i915: Remove redundant test in error path.

The error path for object list being null is in the second goto target.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 630eec2..cc2ca55 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2613,13 +2613,12 @@
 			  "back to user (%d)\n",
 			   args->buffer_count, ret);
 err:
-	if (object_list != NULL) {
-		for (i = 0; i < pinned; i++)
-			i915_gem_object_unpin(object_list[i]);
+	for (i = 0; i < pinned; i++)
+		i915_gem_object_unpin(object_list[i]);
 
-		for (i = 0; i < args->buffer_count; i++)
-			drm_gem_object_unreference(object_list[i]);
-	}
+	for (i = 0; i < args->buffer_count; i++)
+		drm_gem_object_unreference(object_list[i]);
+
 	mutex_unlock(&dev->struct_mutex);
 
 pre_mutex_err: