powerpc/pci: Remove duplicate check in pcibios_fixup_bus()

pci_read_bridge_bases() already checks if the PCI bus is root
bus or not, so we needn't do same check in pcibios_fixup_bus()
and just remove it.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 22fe401..ec6c9db 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1055,8 +1055,7 @@
 	 * bases. This is -not- called when generating the PCI tree from
 	 * the OF device-tree.
 	 */
-	if (bus->self != NULL)
-		pci_read_bridge_bases(bus);
+	pci_read_bridge_bases(bus);
 
 	/* Now fixup the bus bus */
 	pcibios_setup_bus_self(bus);