platform/chrome: cros_ec_debugfs: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>

drivers/platform/chrome/cros_ec_debugfs.c

@@ -337,12 +337,8 @@ static int cros_ec_create_console_log(struct cros_ec_debugfs *debug_info)
 	mutex_init(&debug_info->log_mutex);
 	init_waitqueue_head(&debug_info->log_wq);
 
-	if (!debugfs_create_file("console_log",
-				 S_IFREG | 0444,
-				 debug_info->dir,
-				 debug_info,
-				 &cros_ec_console_log_fops))
-		return -ENOMEM;
+	debugfs_create_file("console_log", S_IFREG | 0444, debug_info->dir,
+			    debug_info, &cros_ec_console_log_fops);
 
 	INIT_DELAYED_WORK(&debug_info->log_poll_work,
 			  cros_ec_console_log_work);
@@ -390,13 +386,8 @@ static int cros_ec_create_panicinfo(struct cros_ec_debugfs *debug_info)
 	debug_info->panicinfo_blob.data = msg->data;
 	debug_info->panicinfo_blob.size = ret;
 
-	if (!debugfs_create_blob("panicinfo",
-				 S_IFREG | 0444,
-				 debug_info->dir,
-				 &debug_info->panicinfo_blob)) {
-		ret = -ENOMEM;
-		goto free;
-	}
+	debugfs_create_blob("panicinfo", S_IFREG | 0444, debug_info->dir,
+			    &debug_info->panicinfo_blob);
 
 	return 0;
 
@@ -405,15 +396,6 @@ free:
 	return ret;
 }
 
-static int cros_ec_create_pdinfo(struct cros_ec_debugfs *debug_info)
-{
-	if (!debugfs_create_file("pdinfo", 0444, debug_info->dir, debug_info,
-				 &cros_ec_pdinfo_fops))
-		return -ENOMEM;
-
-	return 0;
-}
-
 static int cros_ec_debugfs_probe(struct platform_device *pd)
 {
 	struct cros_ec_dev *ec = dev_get_drvdata(pd->dev.parent);
@@ -428,8 +410,6 @@ static int cros_ec_debugfs_probe(struct platform_device *pd)
 
 	debug_info->ec = ec;
 	debug_info->dir = debugfs_create_dir(name, NULL);
-	if (!debug_info->dir)
-		return -ENOMEM;
 
 	ret = cros_ec_create_panicinfo(debug_info);
 	if (ret)
@@ -439,9 +419,8 @@ static int cros_ec_debugfs_probe(struct platform_device *pd)
 	if (ret)
 		goto remove_debugfs;
 
-	ret = cros_ec_create_pdinfo(debug_info);
-	if (ret)
-		goto remove_log;
+	debugfs_create_file("pdinfo", 0444, debug_info->dir, debug_info,
+			    &cros_ec_pdinfo_fops);
 
 	ec->debug_info = debug_info;
 
@@ -449,8 +428,6 @@ static int cros_ec_debugfs_probe(struct platform_device *pd)
 
 	return 0;
 
-remove_log:
-	cros_ec_cleanup_console_log(debug_info);
 remove_debugfs:
 	debugfs_remove_recursive(debug_info->dir);
 	return ret;