staging/gdm72xx: return PTR_ERR rather -ENOENT

return the error of filp_open rather returning -ENOENT.
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gdm72xx/usb_boot.c

@@ -174,7 +174,7 @@ int usb_boot(struct usb_device *usbdev, u16 pid)
 	if (IS_ERR(filp)) {
 		printk(KERN_ERR "Can't find %s.\n", img_name);
 		set_fs(fs);
-		ret = -ENOENT;
+		ret = PTR_ERR(filp);
 		goto restore_fs;
 	}