[PATCH] irqchip/stm32: fix return value of stm32_exti_h_set_affinity

exti hardware point of view, there is no specific action on set_affinity.
So the affinity must be forwarded to parent if there is a
descendent irqchips, otherwise just return IRQ_SET_MASK_OK_DONE.

Signed-off-by: Ludovic Barre <redacted>
---
  drivers/irqchip/irq-stm32-exti.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index faa8482c8246..1a0a60ee7140 100644
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c

@@ -555,7 +555,7 @@ static int stm32_exti_h_set_affinity(struct irq_data *d,
  	if (d->parent_data->chip)
  		return irq_chip_set_affinity_parent(d, dest, force);
  
-	return -EINVAL;
+	return IRQ_SET_MASK_OK_DONE;
  }
  
  static int __maybe_unused stm32_exti_h_suspend(void)