[PATCH] irqchip/alpine-msi: Fix off-by-one on allocation error path

[Zenghui Yu]

When alpine_msix_gic_domain_alloc() returns an error, there is an
off-by-one in the number of IRQs to be freed.

Fix it by passing the number of successfully allocated IRQs, instead of the
relative index of the last allocated one.

Fixes: 3841245e8498 ("irqchip/alpine-msi: Fix freeing of interrupts on allocation error path")
Cc: Tsahee Zidenberg <tsahee at annapurnalabs.com>
Cc: Antoine Tenart <atenart at kernel.org>
Signed-off-by: Zenghui Yu <yuzenghui at huawei.com>
---
 drivers/irqchip/irq-alpine-msi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-alpine-msi.c b/drivers/irqchip/irq-alpine-msi.c
index 9c8b1349ee17..a1430ab60a8a 100644
--- a/drivers/irqchip/irq-alpine-msi.c
+++ b/drivers/irqchip/irq-alpine-msi.c
@@ -165,7 +165,7 @@ static int alpine_msix_middle_domain_alloc(struct irq_domain *domain,
 	return 0;
 
 err_sgi:
-	irq_domain_free_irqs_parent(domain, virq, i - 1);
+	irq_domain_free_irqs_parent(domain, virq, i);
 	alpine_msix_free_sgi(priv, sgi, nr_irqs);
 	return err;
 }
-- 
2.33.0