diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 35b95996ef82..711c29971368 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3688,10 +3688,12 @@ static ssize_t qm_get_qos_value(struct hisi_qm *qm, const char *buf,
 	pdev = container_of(dev, struct pci_dev, dev);
 	if (pci_physfn(pdev) != qm->pdev) {
 		pci_err(qm->pdev, "the pdev input does not match the pf!\n");
+		put_device(dev);
 		return -EINVAL;
 	}
 
 	*fun_index = pdev->devfn;
+	put_device(dev);
 
 	return 0;
 }