[PATCH] drm/tegra: Fix reference leak in tegra_dsi_ganged_probe

[Miaoqian Lin]

The reference taken by 'of_find_device_by_node()' must be released when
not needed anymore. Add put_device() call to fix this.

Fixes: e94236cde4d5 ("drm/tegra: dsi: Add ganged mode support")
Signed-off-by: Miaoqian Lin <linmq...@gmail.com>
---
 drivers/gpu/drm/tegra/dsi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index f46d377f0c30..de1333dc0d86 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -1538,8 +1538,10 @@ static int tegra_dsi_ganged_probe(struct tegra_dsi *dsi)
                dsi->slave = platform_get_drvdata(gangster);
                of_node_put(np);
 
-               if (!dsi->slave)
+               if (!dsi->slave) {
+                       put_device(&gangster->dev);
                        return -EPROBE_DEFER;
+               }
 
                dsi->slave->master = dsi;
        }
-- 
2.17.1