!12804 fix GlobalBatchNorm

From: @yuchaojie
Reviewed-by: @kingxian,@jjfeing
Signed-off-by: @kingxian,@jjfeing

mindspore/nn/layer/normalization.py

@@ -81,7 +81,7 @@ class _BatchNorm(Cell):
         self.parallel_mode = context.get_auto_parallel_context("parallel_mode")
         global SYNC_BN_GROUP_NAME
         # for GlobalBatchNorm
-        if self.group_device_num != 1 and self.parallel_mode != context.ParallelMode.STAND_ALONE:
+        if self.group_device_num != 1:
             self.rank_id = get_rank()
             self.rank_size = get_group_size()
             self.device_list = [i for i in range(0, self.rank_size)]