[PATCH] drm/v3d: Fix PM disable depth imbalance in v3d_platform_drm_probe

[Miaoqian Lin]

The pm_runtime_enable will increase power disable depth.
If the probe fails, we should use pm_runtime_disable() to balance
pm_runtime_enable().

Fixes: 57692c9 ("drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+")
Signed-off-by: Miaoqian Lin <linmq...@gmail.com>
---
 drivers/gpu/drm/v3d/v3d_drv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index bd46396a1ae0..4f293aa733b8 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -300,6 +300,8 @@ static int v3d_platform_drm_probe(struct platform_device 
*pdev)
        v3d_gem_destroy(drm);
 dma_free:
        dma_free_wc(dev, 4096, v3d->mmu_scratch, v3d->mmu_scratch_paddr);
+pm_disable:
+       pm_runtime_disable(dev);
        return ret;
 }
 
-- 
2.17.1