USB: gadget: Remove suspended sysfs file before freeing cdev

cdev struct is accessed in suspended sysfs show function. So
remove sysfs file before freeing the cdev in composite_unbind.

Signed-off-by: Pavankumar Kondeti <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/gadget/composite.c

···
 		kfree(cdev->req->buf);
 		usb_ep_free_request(gadget->ep0, cdev->req);
 	}
+	device_remove_file(&gadget->dev, &dev_attr_suspended);
 	kfree(cdev);
 	set_gadget_data(gadget, NULL);
-	device_remove_file(&gadget->dev, &dev_attr_suspended);
 	composite = NULL;
 }