mwifiex: make mwifiex_free_cmd_buffer() return void

It doesn't fail.
Signed-off-by: NBrian Norris <briannorris@chromium.org>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/marvell/mwifiex/cmdevt.c

@@ -427,7 +427,7 @@ int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter)
  * The function calls the completion callback for all the command
  * buffers that still have response buffers associated with them.
  */
-int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
+void mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
 {
 	struct cmd_ctrl_node *cmd_array;
 	u32 i;
@@ -436,7 +436,7 @@ int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
 	if (!adapter->cmd_pool) {
 		mwifiex_dbg(adapter, FATAL,
 			    "info: FREE_CMD_BUF: cmd_pool is null\n");
-		return 0;
+		return;
 	}
 
 	cmd_array = adapter->cmd_pool;
@@ -464,8 +464,6 @@ int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
 		kfree(adapter->cmd_pool);
 		adapter->cmd_pool = NULL;
 	}
-
-	return 0;
 }
 
 /*

drivers/net/wireless/marvell/mwifiex/main.h

@@ -1077,7 +1077,7 @@ int mwifiex_get_debug_info(struct mwifiex_private *,
 			   struct mwifiex_debug_info *);
 
 int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter);
-int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter);
+void mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter);
 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter);
 void mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter);
 void mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter);