irqchip/apple-aic: Fix cpumask allocation for FIQs

An emparassing typo: allocating a pointer instead of the object
pointed to. No harm done, as the pointer is large enough for
what we are using the object for, but still...

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220310050238.4478-1-guozhengkui@vivo.com

drivers/irqchip/irq-apple-aic.c

@@ -810,7 +810,7 @@ static void build_fiq_affinity(struct aic_irq_chip *ic, struct device_node *aff)
 	if (WARN_ON(n < 0))
 		return;
 
-	ic->fiq_aff[fiq] = kzalloc(sizeof(ic->fiq_aff[fiq]), GFP_KERNEL);
+	ic->fiq_aff[fiq] = kzalloc(sizeof(*ic->fiq_aff[fiq]), GFP_KERNEL);
 	if (!ic->fiq_aff[fiq])
 		return;