drm/i915/selftests: remove a condition

We know that "err" is non-zero so there is no need to check.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191213105050.y2v5nylsuxvc44jj@kili.mountain

drivers/gpu/drm/i915/selftests/i915_request.c

@@ -1086,8 +1086,7 @@ static int __live_parallel_engine1(void *arg)
 		rq = i915_request_create(engine->kernel_context);
 		if (IS_ERR(rq)) {
 			err = PTR_ERR(rq);
-			if (err)
-				break;
+			break;
 		}
 
 		i915_request_get(rq);