iwlwifi: pcie: make iwl_pcie_apm_stop_master() return void

Nothing ever checks the return value of iwl_pcie_apm_stop_master(),
so there's no point in it having one - make it return void.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/pcie/internal.h

@@ -779,7 +779,7 @@ void iwl_trans_pcie_handle_stop_rfkill(struct iwl_trans *trans,
 				       bool was_in_rfkill);
 void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq);
 int iwl_queue_space(const struct iwl_txq *q);
-int iwl_pcie_apm_stop_master(struct iwl_trans *trans);
+void iwl_pcie_apm_stop_master(struct iwl_trans *trans);
 void iwl_pcie_conf_msix_hw(struct iwl_trans_pcie *trans_pcie);
 int iwl_pcie_txq_init(struct iwl_trans *trans, struct iwl_txq *txq,
 		      int slots_num, bool cmd_queue);

drivers/net/wireless/intel/iwlwifi/pcie/trans.c

@@ -448,9 +448,9 @@ static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans)
 				 ~SHR_APMG_XTAL_CFG_XTAL_ON_REQ);
 }
 
-int iwl_pcie_apm_stop_master(struct iwl_trans *trans)
+void iwl_pcie_apm_stop_master(struct iwl_trans *trans)
 {
-	int ret = 0;
+	int ret;
 
 	/* stop device's busmaster DMA activity */
 	iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
@@ -462,8 +462,6 @@ int iwl_pcie_apm_stop_master(struct iwl_trans *trans)
 		IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n");
 
 	IWL_DEBUG_INFO(trans, "stop master\n");
-
-	return ret;
 }
 
 static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)