diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c916176bd9f05..7b45c53f4a7f0 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -780,7 +780,7 @@ static bool nvme_pci_prp_iter_next(struct request *req, struct device *dma_dev,
 		return true;
 	if (!blk_rq_dma_map_iter_next(req, dma_dev, &iod->dma_state, iter))
 		return false;
-	if (!dma_use_iova(&iod->dma_state) && dma_need_unmap(dma_dev)) {
+	if (iod->dma_vecs && !dma_use_iova(&iod->dma_state) && dma_need_unmap(dma_dev)) {
 		iod->dma_vecs[iod->nr_dma_vecs].addr = iter->addr;
 		iod->dma_vecs[iod->nr_dma_vecs].len = iter->len;
 		iod->nr_dma_vecs++;