usb: cdns3: Fix use after free in probe error handling

We can't use "wrap" after it has been freed.

Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20190904100102.GB7007@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/cdns3/cdns3-pci-wrap.c b/drivers/usb/cdns3/cdns3-pci-wrap.c
index c41ddb6..b0a29ef 100644 (file)
--- a/drivers/usb/cdns3/cdns3-pci-wrap.c
+++ b/drivers/usb/cdns3/cdns3-pci-wrap.c
@@ -159,8 +159,9 @@ static int cdns3_pci_probe(struct pci_dev *pdev,
                wrap->plat_dev = platform_device_register_full(&plat_info);
                if (IS_ERR(wrap->plat_dev)) {
                        pci_disable_device(pdev);
+                       err = PTR_ERR(wrap->plat_dev);
                        kfree(wrap);
-                       return PTR_ERR(wrap->plat_dev);
+                       return err;
                }
        }