SecurityPkg/PwdCredentialProviderDxe: Update RouteConfig function

SecurityPkg/PwdCredentialProviderDxe: Update RouteConfig function

According to UEFI spec, the RouteConfig protocol function should populate
the Progress pointer with an address inside Configuration.  This patch
ensures that these functions are compliant when EFI_NOT_FOUND is returned.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Thomas Palmer <thomas.palmer@hpe.com>
Reviewed-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>