[PATCH v2 2/2] drm/exynos: dp: fix wrong return type

[Inki Dae <inki.dae@samsung.com>]

This patch fixes wrong return type when dt binding of bridge device
failed.

If a board has a bridge device then of_graph_get_remote_port_parent
function shouldn't be NULL. So this patch will return a proper error
type so that the deferred probe isn't triggered.

Changelog v2:
- return -EINVAL if getting a port node failed.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_dp_core.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 0b53045..c77fb83 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -1436,8 +1436,10 @@ static int exynos_dp_probe(struct platform_device *pdev)
 			of_node_put(bridge_node);
 			if (!dp->ptn_bridge)
 				return -EPROBE_DEFER;
-		} else
-			return -EPROBE_DEFER;
+		} else {
+			DRM_ERROR("no port node for bridge device.\n");
+			return -EINVAL;
+		}
 	}
 
 	pm_runtime_enable(dev);
-- 
1.9.1