vfio/platform: fix module_put call in error flow

[ Upstream commit dc51ff91cf2d1e9a2d941da483602f71d4a51472 ]

The ->parent_module is the one that use in try_module_get. It should
also be the one the we use in module_put during vfio_platform_open().

Fixes: 32a2d71c4e80 ("vfio: platform: introduce vfio-platform-base module")
Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Message-Id: <20210518192133.59195-1-mgurtovoy@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
index 460760d0becfe19988a72ba08d64ed3a3f32eadc..c29fc6844f84568d50d3f9c8564367e2cd81aa35 100644 (file)
--- a/drivers/vfio/platform/vfio_platform_common.c
+++ b/drivers/vfio/platform/vfio_platform_common.c
@@ -295,7 +295,7 @@ err_irq:
        vfio_platform_regions_cleanup(vdev);
 err_reg:
        mutex_unlock(&driver_lock);
-       module_put(THIS_MODULE);
+       module_put(vdev->parent_module);
        return ret;
 }