!620 [Auto parallel] Fix the code-style warnings in parallel-mode

Merge pull request !620 from Xiaoda/fix-codex-bot-warnings

mindspore/ccsrc/parallel/device_matrix.h

@@ -26,7 +26,6 @@
 
 namespace mindspore {
 namespace parallel {
-
 using RankList = std::vector<int32_t>;
 using Shape = std::vector<int32_t>;
 

mindspore/ccsrc/parallel/step_parallel.cc

@@ -1620,7 +1620,6 @@ CNodePtr FindLossCNode(const FuncGraphPtr &func_graph) {
   auto pre_cnode = pre_node->cast<CNodePtr>();
   MS_EXCEPTION_IF_NULL(pre_cnode);
   auto current_prim = GetValueNode<PrimitivePtr>(pre_cnode->input(0));
-
   // return -> cast
   if (current_prim->name() == CAST && pre_cnode->operator_info() == nullptr) {
     pre_cnode = pre_cnode->input(1)->cast<CNodePtr>();

mindspore/ccsrc/parallel/tensor_layout/redistribution_operator_infer.h

@@ -39,7 +39,8 @@ using OperatorList = std::vector<OperatorC>;
 class RedistributionOperatorInfer {
  public:
   const int NONE = -1;
-  explicit RedistributionOperatorInfer(bool construct_op_flag = true) : construct_op_flag_(construct_op_flag) {}
+  explicit RedistributionOperatorInfer(bool construct_op_flag = true)
+      : construct_op_flag_(construct_op_flag), is_cost_model_(false) {}
   Status Init(const TensorLayout &tensor_layout, const Map &out_tensor_map, RankList dev_list,
               bool is_cost_model = false);
   ~RedistributionOperatorInfer() = default;