PCI: Remove local variable usage in pci_bus_distribute_available_resources()

	 * calculated in __pci_bus_size_bridges() which covers all the

	 * devices currently connected to the port and below.

	 */

	available_io = resource_size(&io);

	available_mmio = resource_size(&mmio);

	available_mmio_pref = resource_size(&mmio_pref);

	extend_bridge_window(bridge, io_res, add_list, available_io);

	extend_bridge_window(bridge, mmio_res, add_list, available_mmio);

	extend_bridge_window(bridge, io_res, add_list, resource_size(&io));

	extend_bridge_window(bridge, mmio_res, add_list, resource_size(&mmio));

	extend_bridge_window(bridge, mmio_pref_res, add_list,

			     available_mmio_pref);

			     resource_size(&mmio_pref));

	/*

	 * Calculate how many hotplug bridges and normal bridges there

	 * extra space reduced by the minimal required space for the

	 * non-hotplug bridges.

	 */

	remaining_io = available_io;

	remaining_mmio = available_mmio;

	remaining_mmio_pref = available_mmio_pref;

	remaining_io = available_io = resource_size(&io);

	remaining_mmio = available_mmio = resource_size(&mmio);

	remaining_mmio_pref = available_mmio_pref = resource_size(&mmio_pref);

	for_each_pci_bridge(dev, bus) {

		const struct resource *res;