[NET]: Remove more unneeded typecasts on *malloc()

This removes more unneeded casts on the return value for kmalloc(),
sock_kmalloc(), and vmalloc().

Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index f69e5ed..c6ee29f 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1237,7 +1237,7 @@
 		goto done;
 
 	err = -ENOBUFS;
-	i = (struct packet_mclist *)kmalloc(sizeof(*i), GFP_KERNEL);
+	i = kmalloc(sizeof(*i), GFP_KERNEL);
 	if (i == NULL)
 		goto done;