qeth: remove cast for kzalloc return value

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>

drivers/s390/net/qeth_core_main.c

@@ -316,7 +316,7 @@ static inline int qeth_alloc_cq(struct qeth_card *card)
 
 		card->qdio.no_in_queues = 2;
 
-		card->qdio.out_bufstates = (struct qdio_outbuf_state *)
+		card->qdio.out_bufstates =
 			kzalloc(card->qdio.no_out_queues *
 				QDIO_MAX_BUFFERS_PER_Q *
 				sizeof(struct qdio_outbuf_state), GFP_KERNEL);