fm10k: allow creation of VLAN interfaces even while down

We re-sync upon going up, so there is little reason to worry about not
syncing immediately with switch. This prevents an error that occurs if
you add a VLAN interface while down.
Signed-off-by: NJacob Keller <jacob.e.keller@intel.com>
Tested-by: NKrishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/fm10k/fm10k_netdev.c

@@ -779,6 +779,12 @@ static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set)
 	if (!set && vid == hw->mac.default_vid)
 		return 0;
 
+	/* Do not throw an error if the interface is down. We will sync once
+	 * we come up
+	 */
+	if (test_bit(__FM10K_DOWN, &interface->state))
+		return 0;
+
 	fm10k_mbx_lock(interface);
 
 	/* only need to update the VLAN if not in promiscuous mode */