diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c
index f26d62e5533a..701e4ad8077b 100644
--- a/drivers/crypto/caam/caampkc.c
+++ b/drivers/crypto/caam/caampkc.c
@@ -194,7 +194,9 @@ static int caam_rsa_count_leading_zeros(struct scatterlist *sgl,
 		if (len && *buff)
 			break;
 
-		sg_miter_next(&miter);
+		if (!sg_miter_next(&miter))
+			break;
+
 		buff = miter.addr;
 		len = miter.length;