netvsc: remove unnecessary check for NULL hdr

The function init_page_array is always called with a valid pointer
to RNDIS header. No check for NULL is needed.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/hyperv/netvsc_drv.c

@@ -333,7 +333,6 @@ static u32 init_page_array(void *hdr, u32 len, struct sk_buff *skb,
 	 * 2. skb linear data
 	 * 3. skb fragment data
 	 */
-	if (hdr != NULL)
 	slots_used += fill_pg_buf(virt_to_page(hdr),
 				  offset_in_page(hdr),
 				  len, &pb[slots_used]);