diff --git a/drivers/qmimodem/sim-legacy.c b/drivers/qmimodem/sim-legacy.c
index 30eb4613..601e721d 100644
--- a/drivers/qmimodem/sim-legacy.c
+++ b/drivers/qmimodem/sim-legacy.c
@@ -83,13 +83,13 @@ static void get_iccid_cb(struct qmi_result *result, void *user_data)
 
 	len = strlen(str);
 	if (len > 20) {
+		qmi_free(str);
 		CALLBACK_WITH_FAILURE(cb, NULL, 0, cbd->data);
 		return;
 	}
 
 	sim_encode_bcd_number(str, iccid);
 	iccid_len = len / 2;
-
 	qmi_free(str);
 
 	CALLBACK_WITH_SUCCESS(cb, iccid, iccid_len, cbd->data);