bridge: remove unused variable ifm

Signed-off-by: NHong Zhiguo <honkiko@gmail.com>
Acked-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/bridge/br_netlink.c

@@ -352,17 +352,14 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
 /* Change state and parameters on port. */
 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
 {
-	struct ifinfomsg *ifm;
 	struct nlattr *protinfo;
 	struct nlattr *afspec;
 	struct net_bridge_port *p;
 	struct nlattr *tb[IFLA_BRPORT_MAX + 1];
 	int err = 0;
 
-	ifm = nlmsg_data(nlh);
-
-	protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
-	afspec = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_AF_SPEC);
+	protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
+	afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 	if (!protinfo && !afspec)
 		return 0;
 
@@ -411,14 +408,11 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
 /* Delete port information */
 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh)
 {
-	struct ifinfomsg *ifm;
 	struct nlattr *afspec;
 	struct net_bridge_port *p;
 	int err;
 
-	ifm = nlmsg_data(nlh);
-
-	afspec = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_AF_SPEC);
+	afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
 	if (!afspec)
 		return 0;