ixgbe: fix for real_num_tx_queues update issue

Currently netdev_features_change is called before fcoe tx queues
setup is done, so this patch moves calling of netdev_features_change
after tx queues setup is done in ixgbe_init_interrupt_scheme, so
that real_num_tx_queues is updated correctly on each fcoe enable
or disable.

This allows additional fcoe queues updated correctly in vlan driver
for their correct queue selection.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ixgbe/ixgbe_fcoe.c

@@ -614,9 +614,9 @@ int ixgbe_fcoe_enable(struct net_device *netdev)
 	netdev->vlan_features |= NETIF_F_FSO;
 	netdev->vlan_features |= NETIF_F_FCOE_MTU;
 	netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
-	netdev_features_change(netdev);
 
 	ixgbe_init_interrupt_scheme(adapter);
+	netdev_features_change(netdev);
 
 	if (netif_running(netdev))
 		netdev->netdev_ops->ndo_open(netdev);
@@ -660,11 +660,11 @@ int ixgbe_fcoe_disable(struct net_device *netdev)
 	netdev->vlan_features &= ~NETIF_F_FSO;
 	netdev->vlan_features &= ~NETIF_F_FCOE_MTU;
 	netdev->fcoe_ddp_xid = 0;
-	netdev_features_change(netdev);
 
 	ixgbe_cleanup_fcoe(adapter);
-
 	ixgbe_init_interrupt_scheme(adapter);
+	netdev_features_change(netdev);
+
 	if (netif_running(netdev))
 		netdev->netdev_ops->ndo_open(netdev);
 	rc = 0;