diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index 164fc9e98c86..60246a8eed50 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -787,13 +787,12 @@ int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a, int prof_b)
 	union {
 		struct iwl_dev_tx_power_cmd v5;
 		struct iwl_dev_tx_power_cmd_v4 v4;
-	} cmd;
-
+	} cmd = {
+		.v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_CHAINS),
+	};
 	int ret;
 	u16 len = 0;
 
-	cmd.v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_CHAINS);
-
 	if (fw_has_api(&mvm->fw->ucode_capa,
 		       IWL_UCODE_TLV_API_REDUCE_TX_POWER))
 		len = sizeof(cmd.v5);