fix init time/ram increased problem

mindspore/lite/src/runtime/kernel/arm/fp32/arithmetic_fp32.cc

@@ -61,6 +61,13 @@ int ArithmeticCPUKernel::InitBroadCastCase() {
     return RET_OK;
   }
 
+  if ((arithmeticParameter_->in_elements_num0_ == 1 || arithmeticParameter_->in_elements_num1_ == 1) &&
+      (arithmetic_opt_run_ != nullptr && arithmetic_opt_run_int_ != nullptr)) {
+    /* run opt function
+     * one of input is scalar */
+    return RET_OK;
+  }
+
   FreeTmpPtr();
 
   CalcMultiplesAndStrides(arithmeticParameter_);
@@ -216,7 +223,7 @@ int ArithmeticCPUKernel::BroadcastRun(void *input0, void *input1, void *output,
 }
 
 bool ArithmeticCPUKernel::CanBatchScalar() {  // 2 32 240 240,  2 32 1 1
-  if (input0_broadcast_ == true || input1_broadcast_ == true) {
+  if (input0_broadcast_ || input1_broadcast_) {
     return false;
   }
   if (arithmeticParameter_->in_elements_num0_ == arithmeticParameter_->in_elements_num1_ ||