fix a bug of memory leak.

ge/single_op/task/aicpu_task_builder.cc

@@ -112,14 +112,11 @@ namespace ge {
 
   Status AiCpuTaskBuilder::BuildTask(ge::AiCpuTask &task, const SingleOpModelParam &param,
                                      bool dynamic_flag, uint64_t session_id) {
-    void *io_addr = nullptr;
-    void *kernel_workspace = nullptr;
-    GE_CHK_STATUS_RET_NOLOG(InitWorkspaceAndIO(&io_addr, &kernel_workspace, param, dynamic_flag));
+    GE_CHK_STATUS_RET_NOLOG(InitWorkspaceAndIO(&task.io_addr_, &task.workspace_addr_, param, dynamic_flag));
 
     STR_FWK_OP_KERNEL fwk_op_kernel = {0};
-    auto ret = SetFmkOpKernel(io_addr, kernel_workspace, fwk_op_kernel);
+    auto ret = SetFmkOpKernel(task.io_addr_, task.workspace_addr_, fwk_op_kernel);
     if (ret != SUCCESS) {
-      (void)rtFree(io_addr);
       return ret;
     }
 
@@ -150,15 +147,12 @@ namespace ge {
       return FAILED;)
     ret = SetKernelArgs(&task.args_, fwk_op_kernel);
     if (ret != SUCCESS) {
-      (void)rtFree(io_addr);
       return ret;
     }
 
     task.arg_size_ = sizeof(STR_FWK_OP_KERNEL);
     task.op_type_ = op_desc_->GetName();
-    task.io_addr_ = io_addr;
     task.task_info_ = kernel_def_.task_info();
-    task.workspace_addr_ = kernel_workspace;
     task.dynamic_flag_ = dynamic_flag;
 
     auto debug_info = BuildTaskUtils::GetTaskInfo(op_desc_);