[VOL-2975] Changes to OpenOLT adapter for supporting multi-tcont

Change-Id: If7d6cf8aabce10d0a4e0e03794c44ac8b1e9981b
diff --git a/internal/pkg/core/device_handler.go b/internal/pkg/core/device_handler.go
index 31ad3a2..507fab3 100644
--- a/internal/pkg/core/device_handler.go
+++ b/internal/pkg/core/device_handler.go
@@ -2181,8 +2181,8 @@
 
 func (dh *DeviceHandler) getExtValue(device *voltha.Device, value voltha.ValueType_Type) (*voltha.ReturnValues, error) {
 	var err error
-	var ID uint32
 	var sn *oop.SerialNumber
+	var ID uint32
 	resp := new(voltha.ReturnValues)
 	valueparam := new(oop.ValueParam)
 	ctx := context.Background()