diff --git a/drivers/crypto/hisilicon/debugfs.c b/drivers/crypto/hisilicon/debugfs.c
index bd205f1f2279..573c0033a5af 100644
--- a/drivers/crypto/hisilicon/debugfs.c
+++ b/drivers/crypto/hisilicon/debugfs.c
@@ -865,6 +865,7 @@ static int qm_diff_regs_init(struct hisi_qm *qm,
 		dfx_regs_uninit(qm, qm->debug.qm_diff_regs, ARRAY_SIZE(qm_diff_regs));
 		ret = PTR_ERR(qm->debug.acc_diff_regs);
 		qm->debug.acc_diff_regs = NULL;
+		qm->debug.qm_diff_regs = NULL;
 		return ret;
 	}