PCI: xgene: Free bridge resource list on failure

of_pci_get_host_bridge_resources() allocates a list of resources for host
bridge windows.  If we fail after allocating that list, free it before we
return error.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index ae00ce2..bc4e1c6 100644 (file)
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -542,12 +542,14 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev)
 
        ret = xgene_pcie_setup(port, &res, iobase);
        if (ret)
-               return ret;
+               goto error;
 
        bus = pci_create_root_bus(&pdev->dev, 0,
                                        &xgene_pcie_ops, port, &res);
-       if (!bus)
-               return -ENOMEM;
+       if (!bus) {
+               ret = -ENOMEM;
+               goto error;
+       }
 
        pci_scan_child_bus(bus);
        pci_assign_unassigned_bus_resources(bus);
@@ -555,6 +557,10 @@ static int xgene_pcie_probe_bridge(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, port);
        return 0;
+
+error:
+       pci_free_resource_list(&res);
+       return ret;
 }
 
 static const struct of_device_id xgene_pcie_match_table[] = {