net: make ndo_get_stats64 a void function

The network device operation for reading statistics is only called
in one place, and it ignores the return value. Having a structure
return value is potentially confusing because some future driver could
incorrectly assume that the return value was used.

Fix all drivers with ndo_get_stats64 to have a void function.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 8029dd4..3691922 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -211,8 +211,8 @@ static int lacp_fast;
 
 static int bond_init(struct net_device *bond_dev);
 static void bond_uninit(struct net_device *bond_dev);
-static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev,
-						struct rtnl_link_stats64 *stats);
+static void bond_get_stats(struct net_device *bond_dev,
+			   struct rtnl_link_stats64 *stats);
 static void bond_slave_arr_handler(struct work_struct *work);
 static bool bond_time_in_interval(struct bonding *bond, unsigned long last_act,
 				  int mod);
@@ -3337,8 +3337,8 @@ static void bond_fold_stats(struct rtnl_link_stats64 *_res,
 	}
 }
 
-static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev,
-						struct rtnl_link_stats64 *stats)
+static void bond_get_stats(struct net_device *bond_dev,
+			   struct rtnl_link_stats64 *stats)
 {
 	struct bonding *bond = netdev_priv(bond_dev);
 	struct rtnl_link_stats64 temp;
@@ -3362,8 +3362,6 @@ static struct rtnl_link_stats64 *bond_get_stats(struct net_device *bond_dev,
 
 	memcpy(&bond->bond_stats, stats, sizeof(*stats));
 	spin_unlock(&bond->stats_lock);
-
-	return stats;
 }
 
 static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd)