[PATCH v2 1/2] vfio: platform: Fix reset module leak in error path

[Geert Uytterhoeven]

If the IOMMU group setup fails, the reset module is not released.

Fixes: b5add544d677d363 ("vfio, platform: make reset driver a requirement by 
default")
Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
Reviewed-by: Eric Auger <eric.au...@redhat.com>
---
v2:
  - Add Reviewed-by.
---
 drivers/vfio/platform/vfio_platform_common.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/vfio/platform/vfio_platform_common.c 
b/drivers/vfio/platform/vfio_platform_common.c
index 35469af87f88678e..b60bb5326668498c 100644
--- a/drivers/vfio/platform/vfio_platform_common.c
+++ b/drivers/vfio/platform/vfio_platform_common.c
@@ -680,18 +680,23 @@ int vfio_platform_probe_common(struct 
vfio_platform_device *vdev,
        group = vfio_iommu_group_get(dev);
        if (!group) {
                pr_err("VFIO: No IOMMU group for device %s\n", vdev->name);
-               return -EINVAL;
+               ret = -EINVAL;
+               goto put_reset;
        }
 
        ret = vfio_add_group_dev(dev, &vfio_platform_ops, vdev);
-       if (ret) {
-               vfio_iommu_group_put(group, dev);
-               return ret;
-       }
+       if (ret)
+               goto put_iommu;
 
        mutex_init(&vdev->igate);
 
        return 0;
+
+put_iommu:
+       vfio_iommu_group_put(group, dev);
+put_reset:
+       vfio_platform_put_reset(vdev);
+       return ret;
 }
 EXPORT_SYMBOL_GPL(vfio_platform_probe_common);
 
-- 
2.7.4