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pm_runtime_get_sync() will increment pm usage counter even it failed. Forgetting to call pm_runtime_put will result in reference leak in vfio_platform_open, so we should fix it. Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Acked-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>