irqchip/imx-mu-msi: Do not check for 0 return after calling platform_get_irq()

It is not possible for platform_get_irq() to return 0. Use the
return value from platform_get_irq().

Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230803083452.4085650-2-ruanjinjie@huawei.com

diff --git a/drivers/irqchip/irq-imx-mu-msi.c b/drivers/irqchip/irq-imx-mu-msi.c
index 229039e..90d41c1 100644 (file)
--- a/drivers/irqchip/irq-imx-mu-msi.c
+++ b/drivers/irqchip/irq-imx-mu-msi.c
@@ -339,8 +339,8 @@ static int __init imx_mu_of_init(struct device_node *dn,
        msi_data->msiir_addr = res->start + msi_data->cfg->xTR;
 
        irq = platform_get_irq(pdev, 0);
-       if (irq <= 0)
-               return -ENODEV;
+       if (irq < 0)
+               return irq;
 
        platform_set_drvdata(pdev, msi_data);