diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c
index c193516a254d..771797b6e268 100644
--- a/drivers/firmware/arm_scmi/smc.c
+++ b/drivers/firmware/arm_scmi/smc.c
@@ -196,6 +196,13 @@ static int smc_chan_free(int id, void *p, void *data)
 	struct scmi_chan_info *cinfo = p;
 	struct scmi_smc *scmi_info = cinfo->transport_info;
 
+	/*
+	 * Different protocols might share the same chan info, so a previous
+	 * smc_chan_free call might have already freed the structure.
+	 */
+	if (!scmi_info)
+		return 0;
+
 	/* Ignore any possible further reception on the IRQ path */
 	if (scmi_info->irq > 0)
 		free_irq(scmi_info->irq, scmi_info);