Reraise exceptions too if we go to FAULT

tangostationcontrol/tangostationcontrol/devices/device_decorators.py

@@ -55,11 +55,9 @@ def fault_on_error():
             try:
                 return func(self, *args, **kwargs)
             except Exception as e:
-
                 logger.exception("Function failed.")
                 self.Fault(f"FAULT in {func.__name__}: {e.__class__.__name__}: {e}")
-
-                return None
+                raise
 
         return error_wrapper