[PATCH] drm/msm/hdmi: fix error check return value of irq_of_parse_and_map()

[cgel . zte]

From: Lv Ruyi <lv.r...@zte.com.cn>

The irq_of_parse_and_map() function returns 0 on failure, and does not
return a negative value anyhow, so never enter this conditional branch.

Fixes: f6a8eaca0ea1 ("drm/msm/mdp5: use irqdomains")
Reported-by: Zeal Robot <zea...@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.r...@zte.com.cn>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index ec324352e862..c3b661c2932d 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -298,9 +298,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
        drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
 
        hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
-       if (hdmi->irq < 0) {
-               ret = hdmi->irq;
-               DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
+       if (!hdmi->irq) {
+               ret = -EINVAL;
+               DRM_DEV_ERROR(dev->dev, "failed to get irq\n");
                goto fail;
        }
 
-- 
2.25.1