media: mtk-vcodec: add missing put_device() call in mtk_vcodec_init_dec_pm()

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

Fixes: 590577a4e525 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
index 36dfe3f..f6a6b42 100644 (file)
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
@@ -47,11 +47,14 @@ int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
                dec_clk->clk_info = devm_kcalloc(&pdev->dev,
                        dec_clk->clk_num, sizeof(*clk_info),
                        GFP_KERNEL);
-               if (!dec_clk->clk_info)
-                       return -ENOMEM;
+               if (!dec_clk->clk_info) {
+                       ret = -ENOMEM;
+                       goto put_device;
+               }
        } else {
                mtk_v4l2_err("Failed to get vdec clock count");
-               return -EINVAL;
+               ret = -EINVAL;
+               goto put_device;
        }
 
        for (i = 0; i < dec_clk->clk_num; i++) {
@@ -60,19 +63,22 @@ int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
                        "clock-names", i, &clk_info->clk_name);
                if (ret) {
                        mtk_v4l2_err("Failed to get clock name id = %d", i);
-                       return ret;
+                       goto put_device;
                }
                clk_info->vcodec_clk = devm_clk_get(&pdev->dev,
                        clk_info->clk_name);
                if (IS_ERR(clk_info->vcodec_clk)) {
                        mtk_v4l2_err("devm_clk_get (%d)%s fail", i,
                                clk_info->clk_name);
-                       return PTR_ERR(clk_info->vcodec_clk);
+                       ret = PTR_ERR(clk_info->vcodec_clk);
+                       goto put_device;
                }
        }
 
        pm_runtime_enable(&pdev->dev);
-
+       return 0;
+put_device:
+       put_device(pm->larbvdec);
        return ret;
 }