diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 58938cc4b7d3..908c1d00a5c7 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -3360,7 +3360,7 @@ static void
 ir_set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
-	struct irq_cfg *cfg;
+	struct irq_cfg *cfg = desc->chip_data;
 	unsigned int dest;
 	struct irte irte;