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vfio: fix a missed vfio group put in vfio_pin_pages

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When error occurs, need to put vfio group after a successful get.

Fixes: 95fc87b441 ("vfio: Selective dirty page tracking if IOMMU backed device pins pages")
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Yan Zhao 2020-09-16 10:29:27 +08:00 committed by Alex Williamson
parent 7ef32e5236
commit 28b1302440
1 changed files with 4 additions and 2 deletions
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6
drivers/vfio/vfio.c
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@ -1949,8 +1949,10 @@ int vfio_pin_pages(struct device *dev, unsigned long *user_pfn, int npage,
if (!group) if (!group)
return -ENODEV; return -ENODEV;
if (group->dev_counter > 1) if (group->dev_counter > 1) {
return -EINVAL; ret = -EINVAL;
goto err_pin_pages;
}
ret = vfio_group_add_container_user(group); ret = vfio_group_add_container_user(group);
if (ret) if (ret)