diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c
index e123de6e8c67..aa02392265d3 100644
--- a/drivers/firmware/arm_scmi/optee.c
+++ b/drivers/firmware/arm_scmi/optee.c
@@ -467,6 +467,13 @@ static int scmi_optee_chan_free(int id, void *p, void *data)
 	struct scmi_chan_info *cinfo = p;
 	struct scmi_optee_channel *channel = cinfo->transport_info;
 
+	/*
+	 * Different protocols might share the same chan info, so a previous
+	 * call might have already freed the structure.
+	 */
+	if (!channel)
+		return 0;
+
 	mutex_lock(&scmi_optee_private->mu);
 	list_del(&channel->link);
 	mutex_unlock(&scmi_optee_private->mu);