drivers/s390/net: Drop memory allocation cast

Drop cast on the result of kmalloc and similar functions.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
@@

- (T *)
  (\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
   kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...))
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/lcs.c

@@ -1238,8 +1238,7 @@ lcs_set_mc_addresses(struct lcs_card *card, struct in_device *in4_dev)
 		ipm = lcs_check_addr_entry(card, im4, buf);
 		if (ipm != NULL)
 			continue;	/* Address already in list. */
-		ipm = (struct lcs_ipm_list *)
-			kzalloc(sizeof(struct lcs_ipm_list), GFP_ATOMIC);
+		ipm = kzalloc(sizeof(struct lcs_ipm_list), GFP_ATOMIC);
 		if (ipm == NULL) {
 			pr_info("Not enough memory to add"
 				" new multicast entry!\n");