CreatePciIoDevice() detects whether the PCI device is a PCI Express device and remembers the device type in PciIoDevice->IsPciExp. RegisterPciDevice() detects the device type again which is unnecessary. The detection logic can be removed. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com>