resource/PCI: align functions now return start of resource

As suggested by Linus, align functions should return the start
of a resource, not void. An update of "res->start" is no longer
necessary.

Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index cef28a7..d29d69a 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -36,8 +36,10 @@
 pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
 		resource_size_t size, resource_size_t align,
 		resource_size_t min, unsigned int type_mask,
-		void (*alignf)(void *, struct resource *, resource_size_t,
-				resource_size_t),
+		resource_size_t (*alignf)(void *,
+					  struct resource *,
+					  resource_size_t,
+					  resource_size_t),
 		void *alignf_data)
 {
 	int i, ret = -ENOMEM;