[POWERPC] EEH: Avoid a possible NULL pointer dereference

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index 06b89b56d0e9..68ea5eee39a8 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -310,8 +310,6 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
         const char *location, *pci_str, *drv_str;
 
         frozen_dn = find_device_pe(event->dn);
-        frozen_bus = pcibios_find_pci_bus(frozen_dn);
-
         if (!frozen_dn) {
 
                 location = of_get_property(event->dn, "ibm,loc-code", NULL);
@@ -321,6 +319,8 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
                         location, pci_name(event->dev));
                 return NULL;
         }
+
+        frozen_bus = pcibios_find_pci_bus(frozen_dn);
         location = of_get_property(frozen_dn, "ibm,loc-code", NULL);
         location = location ? location : "unknown";