i40e: fix retrying in i40e_aq_get_phy_capabilities

Fixed a bug where driver was breaking out of the loop and
reporting an error without retrying first.

Signed-off-by: Marcin Formela <marcin.formela@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>