sysfs_remove_group(&client->dev.kobj, &adm1031_group);
sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt);
if ((ret = i2c_detach_client(client)) != 0) {
sysfs_remove_group(&client->dev.kobj, &adm1031_group);
sysfs_remove_group(&client->dev.kobj, &adm1031_group_opt);
if ((ret = i2c_detach_client(client)) != 0) {