[Freedreno] [PATCH] drm/msm/dpu: 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: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support")
Reported-by: Zeal Robot <zea...@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.r...@zte.com.cn>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index e29796c4f27b..36eeeae7fe45 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1187,9 +1187,9 @@ struct msm_kms *dpu_kms_init(struct drm_device *dev)
        dpu_kms = to_dpu_kms(priv->kms);
 
        irq = irq_of_parse_and_map(dpu_kms->pdev->dev.of_node, 0);
-       if (irq < 0) {
-               DPU_ERROR("failed to get irq: %d\n", irq);
-               return ERR_PTR(irq);
+       if (!irq) {
+               DPU_ERROR("failed to get irq\n");
+               return ERR_PTR(-EINVAL);
        }
        dpu_kms->base.irq = irq;
 
-- 
2.25.1