i40e: Fix a bug with VMDq RSS queue allocation

The X722 pf flag setup should happen before the VMDq RSS queue count is
initialized for VMDq VSI to get the right number of queues for RSS in
case of X722 devices.

Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Alice Michael <alice.michael@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>