siemens/sitemp_g1p1: Fix typo

Change-Id: I1c9af223d3598c4822905acce0cf9b1dca6ad1b6
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Found-by: Coverity Scan #1287066
Reviewed-on: https://review.coreboot.org/15981
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
diff --git a/src/mainboard/siemens/sitemp_g1p1/mainboard.c b/src/mainboard/siemens/sitemp_g1p1/mainboard.c
index 810f7e0..f01420f 100644
--- a/src/mainboard/siemens/sitemp_g1p1/mainboard.c
+++ b/src/mainboard/siemens/sitemp_g1p1/mainboard.c
@@ -740,7 +740,7 @@
 		}
 		// restore changes made for device 2
 		dev2->bus->secondary = secondary;
-		dev2->bus->secondary = subordinate;
+		dev2->bus->subordinate = subordinate;
 		pci_write_config32(dev2, PCI_PRIMARY_BUS, pci_primary_bus);
 	}
 		break;