i40e: Fix a port VLAN configuration bug

If a port VLAN is set for a given virtual function (VF) before the VF
driver is loaded then a configuration error results in which the port
VLAN is ignored when the VF driver is subsequently loaded.  This causes
the VF's MAC/VLAN filters to not use the correct VLAN filter.  This
patch ensures that the port VLAN filter is considered at the right time
during configuration of the VF's MAC/VLAN filters.

Change-ID: I28f404cbc21a4c6d70a7980b87c77f13f06685a4
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>