[PATCH] drm/msm/dpu: Fix error return code in dpu_mdss_init()

[Chen Zhou]

Fix to return a negative error code from the error handling case
instead of 0 in function dpu_mdss_init(), as done elsewhere in this
function.

Fixes: 070e64dc1bbc ("drm/msm/dpu: Convert to a chained irq chip")
Reported-by: Hulk Robot <hulkci at huawei.com>
Signed-off-by: Chen Zhou <chenzhou10 at huawei.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
index cd4078807db1..6e600b4ca995 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
@@ -297,8 +297,10 @@ int dpu_mdss_init(struct drm_device *dev)
 		goto irq_domain_error;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
+	if (irq < 0) {
+		ret = irq;
 		goto irq_error;
+	}
 
 	irq_set_chained_handler_and_data(irq, dpu_mdss_irq,
 					 dpu_mdss);
-- 
2.20.1