From 2132940f2192824acf160d115192755f7c58a847 Mon Sep 17 00:00:00 2001
From: Yu Kuai <yukuai3@huawei.com>
Date: Fri, 11 Sep 2020 19:21:19 +0800
Subject: drm/mediatek: Add missing put_device() call in mtk_drm_kms_init()
Git-commit: 2132940f2192824acf160d115192755f7c58a847
Patch-mainline: v5.9-rc6
References: bsc#1152446

if of_find_device_by_node() succeed, mtk_drm_kms_init() doesn't have
a corresponding put_device(). Thus add jump target to fix the exception
handling for this function implementation.

Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/mediatek/mtk_drm_drv.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -251,7 +251,7 @@ static int mtk_drm_kms_init(struct drm_d
 
 	ret = component_bind_all(drm->dev, drm);
 	if (ret)
-		goto err_config_cleanup;
+		goto put_mutex_dev;
 
 	/*
 	 * We currently support two fixed data streams, each optional,
@@ -298,7 +298,7 @@ static int mtk_drm_kms_init(struct drm_d
 	}
 	if (!dma_dev->dma_parms) {
 		ret = -ENOMEM;
-		goto err_component_unbind;
+		goto put_dma_dev;
 	}
 
 	ret = dma_set_max_seg_size(dma_dev, (unsigned int)DMA_BIT_MASK(32));
@@ -325,11 +325,14 @@ static int mtk_drm_kms_init(struct drm_d
 err_unset_dma_parms:
 	if (private->dma_parms_allocated)
 		dma_dev->dma_parms = NULL;
+put_dma_dev:
+	put_device(private->dma_dev);
 err_component_unbind:
 	component_unbind_all(drm->dev, drm);
 err_config_cleanup:
 	drm_mode_config_cleanup(drm);
-
+put_mutex_dev:
+	put_device(private->mutex_dev);
 	return ret;
 }