netxen: remove unnecessary [kv][mcz]alloc casts

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/netxen/netxen_nic_init.c

@@ -278,8 +278,7 @@ int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 			break;
 
 		}
-		rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
-			vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
+		rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 		if (rds_ring->rx_buf_arr == NULL) {
 			printk(KERN_ERR "%s: Failed to allocate "
 				"rx buffer ring %d\n",