Use free_bch() instead of kfree() to free init_bch()
allocated data.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: NRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>