net/hyperv: Remove the unnecessary memset in rndis_filter_send()

The memory has been allocated by kzalloc, so it's unnecessary to memset
again.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/hyperv/rndis_filter.c

@@ -778,8 +778,6 @@ int rndis_filter_send(struct hv_device *dev,
 	/* Add the rndis header */
 	filter_pkt = (struct rndis_filter_packet *)pkt->extension;
 
-	memset(filter_pkt, 0, sizeof(struct rndis_filter_packet));
-
 	rndis_msg = &filter_pkt->msg;
 	rndis_msg_size = RNDIS_MESSAGE_SIZE(struct rndis_packet);