PCI: fix a brace coding style issue in probe.c

Fixed a brace coding style issue.
Signed-off-by: Zac Storer <zac.3.14159@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

drivers/pci/probe.c

@@ -1534,7 +1534,7 @@ struct pci_bus * pci_create_bus(struct device *parent,
 		return NULL;
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (!dev){
+	if (!dev) {
 		kfree(b);
 		return NULL;
 	}