Cleanup

val.py

@@ -143,11 +143,11 @@ def run(data,
         if pt or jit:
             model.model.half() if half else model.model.float()
         elif engine:
+            batch_size = model.batch_size
             if model.trt_fp16_input != half:
                 LOGGER.info('model ' + (
                     'requires' if model.trt_fp16_input else 'incompatible with') + ' --half. Adjusting automatically.')
                 half = model.trt_fp16_input
-            batch_size = model.batch_size
         else:
             half = False
             batch_size = 1  # export.py models default to batch-size 1