USB: chipidea: 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.
Acked-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/chipidea/ci.h

@@ -450,7 +450,7 @@ void hw_phymode_configure(struct ci_hdrc *ci);
 
 void ci_platform_configure(struct ci_hdrc *ci);
 
-int dbg_create_files(struct ci_hdrc *ci);
+void dbg_create_files(struct ci_hdrc *ci);
 
 void dbg_remove_files(struct ci_hdrc *ci);
 #endif	/* __DRIVERS_USB_CHIPIDEA_CI_H */

drivers/usb/chipidea/core.c

@@ -1062,9 +1062,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
 		ci_hdrc_otg_fsm_start(ci);
 
 	device_set_wakeup_capable(&pdev->dev, true);
-	ret = dbg_create_files(ci);
-	if (ret)
-		goto stop;
+	dbg_create_files(ci);
 
 	ret = sysfs_create_group(&dev->kobj, &ci_attr_group);
 	if (ret)

drivers/usb/chipidea/debug.c

@@ -340,54 +340,28 @@ DEFINE_SHOW_ATTRIBUTE(ci_registers);
  *
  * This function returns an error code
  */
-int dbg_create_files(struct ci_hdrc *ci)
+void dbg_create_files(struct ci_hdrc *ci)
 {
-	struct dentry *dent;
-
 	ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL);
-	if (!ci->debugfs)
-		return -ENOMEM;
-
-	dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,
-				   &ci_device_fops);
-	if (!dent)
-		goto err;
-
-	dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs,
-				   ci, &ci_port_test_fops);
-	if (!dent)
-		goto err;
-
-	dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,
-				   &ci_qheads_fops);
-	if (!dent)
-		goto err;
 
-	dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,
-				   &ci_requests_fops);
-	if (!dent)
-		goto err;
+	debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,
+			    &ci_device_fops);
+	debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs, ci,
+			    &ci_port_test_fops);
+	debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,
+			    &ci_qheads_fops);
+	debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,
+			    &ci_requests_fops);
 
 	if (ci_otg_is_fsm_mode(ci)) {
-		dent = debugfs_create_file("otg", S_IRUGO, ci->debugfs, ci,
-					&ci_otg_fops);
-		if (!dent)
-			goto err;
+		debugfs_create_file("otg", S_IRUGO, ci->debugfs, ci,
+				    &ci_otg_fops);
 	}
 
-	dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,
-				   &ci_role_fops);
-	if (!dent)
-		goto err;
-
-	dent = debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci,
-				&ci_registers_fops);
-
-	if (dent)
-		return 0;
-err:
-	debugfs_remove_recursive(ci->debugfs);
-	return -ENOMEM;
+	debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,
+			    &ci_role_fops);
+	debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci,
+			    &ci_registers_fops);
 }
 
 /**