fix input_data_config

Author: benieric

src/sagemaker/modules/train/model_trainer.py

@@ -699,7 +699,7 @@ def train(
                 training_job_name=current_training_job_name,
                 algorithm_specification=algorithm_specification,
                 hyper_parameters=string_hyper_parameters,
-                input_data_config=input_data_config,
+                input_data_config=self.input_data_config,
                 resource_config=resource_config,
                 vpc_config=vpc_config,
                 # Public Instance Attributes