hv_netvsc: Remove unnecessary var link_state from struct netvsc_device_info

We simply use rndis_device->link_state in the netdev_dbg. The variable,
link_state from struct netvsc_device_info, is not used anywhere else.

Signed-off-by: Haiyang Zhang <[e-mail]>
Reviewed-by: Stephen Hemminger <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/hyperv/hyperv_net.h

···
 
 struct netvsc_device_info {
 	unsigned char mac_adr[ETH_ALEN];
-	bool link_state;	/* 0 - link up, 1 - link down */
 	int  ring_size;
 	u32  max_num_vrss_chns;
 	u32  num_chn;
···
 	struct net_device *ndev;
 
 	enum rndis_device_state state;
-	bool link_state;
+
 	atomic_t new_req_id;
 
 	spinlock_t request_lock;
 	struct list_head req_list;
 
 	struct work_struct mcast_work;
+
+	bool link_state;        /* 0 - link up, 1 - link down */
 
 	u8 hw_mac_adr[ETH_ALEN];
 	u8 rss_key[NETVSC_HASH_KEYLEN];

drivers/net/hyperv/rndis_filter.c

···
 
 	rndis_filter_query_device_link_status(rndis_device);
 
-	device_info->link_state = rndis_device->link_state;
-
 	netdev_dbg(net, "Device MAC %pM link state %s\n",
 		   rndis_device->hw_mac_adr,
-		   device_info->link_state ? "down" : "up");
+		   rndis_device->link_state ? "down" : "up");
 
 	if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5)
 		return 0;