pci: fix pci_find_bus()

typo in c021f8e65f5009a5ab5711d9d5326fcab553ef1c.
comparison fix.

Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

hw/pci.c

diff --git a/hw/pci.c b/hw/pci.c
index 9ad63dd..e91d2e6 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -1558,7 +1558,7 @@
     /* try child bus */
     QLIST_FOREACH(sec, &bus->child, sibling) {
         if (!bus->parent_dev /* pci host bridge */
-            || (pci_bus_num(sec) >= bus_num &&
+            || (pci_bus_num(sec) <= bus_num &&
                 bus_num <= bus->parent_dev->config[PCI_SUBORDINATE_BUS]) ) {
             ret = pci_find_bus(sec, bus_num);
             if (ret) {