VXLAN: Fix sparse warnings.

Fixes following warning:-
drivers/net/vxlan.c:471:35: warning: symbol 'dev' shadows an earlier one
drivers/net/vxlan.c:433:26: originally declared here
drivers/net/vxlan.c:794:34: warning: symbol 'vxlan' shadows an earlier one
drivers/net/vxlan.c:757:26: originally declared here

CC: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 7624ab1..62a4438 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -468,15 +468,15 @@
 		vni = vxlan->vni;
 
 	if (tb[NDA_IFINDEX]) {
-		struct net_device *dev;
+		struct net_device *tdev;
 
 		if (nla_len(tb[NDA_IFINDEX]) != sizeof(u32))
 			return -EINVAL;
 		ifindex = nla_get_u32(tb[NDA_IFINDEX]);
-		dev = dev_get_by_index(net, ifindex);
-		if (!dev)
+		tdev = dev_get_by_index(net, ifindex);
+		if (!tdev)
 			return -EADDRNOTAVAIL;
-		dev_put(dev);
+		dev_put(tdev);
 	} else
 		ifindex = 0;
 
@@ -792,7 +792,6 @@
 	n = neigh_lookup(&arp_tbl, &tip, dev);
 
 	if (n) {
-		struct vxlan_dev *vxlan = netdev_priv(dev);
 		struct vxlan_fdb *f;
 		struct sk_buff	*reply;