[PATH] drm/loongson: add cleanup path for lsdc_ttm_init

[yaolu]

From: Lu Yao <ya...@kylinos.cn>

There has resource leak when TTM_PL_VRAM or TTM_PL_TT man range init
failed.

Signed-off-by: Lu Yao <ya...@kylinos.cn>
---
 drivers/gpu/drm/loongson/lsdc_ttm.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/loongson/lsdc_ttm.c 
b/drivers/gpu/drm/loongson/lsdc_ttm.c
index d7441d96a0dc..c84bc582f77c 100644
--- a/drivers/gpu/drm/loongson/lsdc_ttm.c
+++ b/drivers/gpu/drm/loongson/lsdc_ttm.c
@@ -554,7 +554,7 @@ int lsdc_ttm_init(struct lsdc_device *ldev)
 
        ret = ttm_range_man_init(&ldev->bdev, TTM_PL_VRAM, false, 
num_vram_pages);
        if (unlikely(ret))
-               return ret;
+               goto err_vram;
 
        drm_info(ddev, "VRAM: %lu pages ready\n", num_vram_pages);
 
@@ -565,11 +565,17 @@ int lsdc_ttm_init(struct lsdc_device *ldev)
 
        ret = ttm_range_man_init(&ldev->bdev, TTM_PL_TT, true, num_gtt_pages);
        if (unlikely(ret))
-               return ret;
+               goto err_gtt;
 
        drm_info(ddev, "GTT: %lu pages ready\n", num_gtt_pages);
 
        return drmm_add_action_or_reset(ddev, lsdc_ttm_fini, ldev);
+
+err_gtt:
+       ttm_range_man_fini(&ldev->bdev, TTM_PL_VRAM);
+err_vram:
+       ttm_device_fini(&ldev->bdev);
+       return ret;
 }
 
 void lsdc_ttm_debugfs_init(struct lsdc_device *ldev)
-- 
2.25.1