ia64/PCI: Clean up pci_scan_root_bus() usage
pci_scan_root_bus() already set bus->sysdata, so no need to explicitly set it again in function sn_pci_controller_fixup(). Signed-off-by: NJiang Liu <jiang.liu@huawei.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com>
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