diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index e5f3592e5419..4b4c15e94338 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -971,13 +971,14 @@ static void cxl_mem_get_records_log(struct cxl_memdev_state *mds,
 		.payload_in = &log_type,
 		.size_in = sizeof(log_type),
 		.payload_out = payload,
-		.size_out = mds->payload_size,
 		.min_out = struct_size(payload, records, 0),
 	};
 
 	do {
 		int rc, i;
 
+		mbox_cmd.size_out = mds->payload_size;
+
 		rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 		if (rc) {
 			dev_err_ratelimited(dev,