[PATCH 08/16] irqchip/mips-gic: clean up if IPI domain registration fails

[Haofeng Li <920484857@qq.com>]

From: Haofeng Li <lihaofeng@kylinos.cn>

If gic_register_ipi_domain() fails, the primary IRQ domain and the
mapped register base are left allocated.

At this point the CPU interrupt handler has not yet been published.
Remove the primary domain, unmap the register base, and clear both
global pointers before returning the error.

Fixes: 8190cc572981 ("irqchip/mips-gic: Only register IPI domain when SMP is enabled")

Signed-off-by: Haofeng Li <lihaofeng@kylinos.cn>
---
 drivers/irqchip/irq-mips-gic.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
index 85fe0d8a34c5..2f2ba54f227f 100644
--- a/drivers/irqchip/irq-mips-gic.c
+++ b/drivers/irqchip/irq-mips-gic.c
@@ -968,8 +968,13 @@ static int __init gic_of_init(struct device_node *node,
 	}
 
 	ret = gic_register_ipi_domain(node);
-	if (ret)
+	if (ret) {
+		irq_domain_remove(gic_irq_domain);
+		gic_irq_domain = NULL;
+		iounmap(mips_gic_base);
+		mips_gic_base = NULL;
 		return ret;
+	}
 
 	if (cpu_has_veic) {
 		/* Always use vector 1 in EIC mode */
-- 
2.25.1