PCI/ACPI: Combine duplicate adjacent "if" tests

[bhelgaas: split out from acpi_pci_roots removal]
Signed-off-by: NJiang Liu <jiang.liu@huawei.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

drivers/acpi/pci_root.c

@@ -536,11 +536,10 @@ static int acpi_pci_root_add(struct acpi_device *device,
 	if (system_state != SYSTEM_BOOTING) {
 		pcibios_resource_survey_bus(root->bus);
 		pci_assign_unassigned_bus_resources(root->bus);
-	}
 
-	/* need to after hot-added ioapic is registered */
-	if (system_state != SYSTEM_BOOTING)
+		/* need to after hot-added ioapic is registered */
 		pci_enable_bridges(root->bus);
+	}
 
 	pci_bus_add_devices(root->bus);
 	return 1;