remove cast for kzalloc return value.
Signed-off-by: NZhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NFrank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>