[lvc-project] [PATCH] gpu: cdns-mhdp8546: fix call balance of mhdp->clk handling routines

[Vitalii Mordan]

If the clock mhdp->clk was not enabled in cdns_mhdp_probe(), it should not
be disabled in any path.

Found by Linux Verification Center (linuxtesting.org) with Klever.

Fixes: fb43aa0acdfd ("drm: bridge: Add support for Cadence MHDP8546 DPI/DP bridge")
Signed-off-by: Vitalii Mordan <mordan at ispras.ru>
---
 drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index d081850e3c03..3e923bcfb0bf 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -2504,7 +2504,11 @@ static int cdns_mhdp_probe(struct platform_device *pdev)
 
 	mhdp->info = of_device_get_match_data(dev);
 
-	clk_prepare_enable(clk);
+	ret = clk_prepare_enable(clk);
+	if (ret) {
+		dev_err(dev, "Failed to enable clk\n");
+		return ret;
+	}
 
 	pm_runtime_enable(dev);
 	ret = pm_runtime_resume_and_get(dev);
-- 
2.25.1