Python Gemm tile_descriptions fix (#1439)

* fix python gemm tile descriptions

* fix formatting

* fix math_operation filtering

* fix formatting

Author: jeromeku

python/cutlass/op/gemm.py

@@ -403,7 +403,7 @@ def tile_descriptions(self) -> list:
         """
         tds = [datatypes.td_from_profiler_op(op) for op in self.possible_operations.all_operations]
         if self._math_operation is not None:
-            tds = [td for td in tds if td.tile_description.math_instruction == self._math_operation]
+            tds = [td for td in tds if td.math_instruction.math_operation == self._math_operation]
         return tds
 
     def construct(
@@ -712,4 +712,4 @@ def run(self, A=None, B=None, C=None, D=None,
         if sync:
             arguments.sync()
 
-        return arguments
+        return arguments