[NET]: Remove unneeded kmalloc() return value casts

Get rid of needless casting of kmalloc() return value in net/

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index a31244e..f812ed1 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -403,7 +403,7 @@
 
 	size = sizeof(req) + req.conn_num * sizeof(*ci);
 
-	if (!(cl = (void *) kmalloc(size, GFP_KERNEL)))
+	if (!(cl = kmalloc(size, GFP_KERNEL)))
 		return -ENOMEM;
 
 	if (!(hdev = hci_dev_get(req.dev_id))) {