fix: l2_limit_for_tiling (#3479)

Author: zewenli98

py/torch_tensorrt/dynamo/conversion/_TRTInterpreter.py

@@ -347,9 +347,10 @@ def _populate_trt_builder_config(
                 self.compilation_settings.tiling_optimization_level
             ]
 
-            builder_config.l2_limit_for_tiling = (
-                self.compilation_settings.l2_limit_for_tiling
-            )
+            if self.compilation_settings.l2_limit_for_tiling != -1:
+                builder_config.l2_limit_for_tiling = (
+                    self.compilation_settings.l2_limit_for_tiling
+                )
 
         return builder_config