[functorch] fix problem from getitem (pytorch/functorch#551)

diff --git a/functorch/test/functorch_additional_op_db.py b/functorch/test/functorch_additional_op_db.py
index c77c70d..013cb56 100644
--- a/functorch/test/functorch_additional_op_db.py
+++ b/functorch/test/functorch_additional_op_db.py
@@ -279,7 +279,7 @@
     ]
 
     return tuple(SampleInput(
-        make_tensor((S, S, S), device, dtype, low=None, high=None, requires_grad=requires_grad),
+        make_tensor((S, S, S), device=device, dtype=dtype, low=None, high=None, requires_grad=requires_grad),
         args=args)
         for args in test_args)