mainline inclusion
from mainline-v5.4-rc2
commit 055e547478a11a6360c7ce05e2afc3e366968a12
category: bugfix
bugzilla: 13690
CVE: CVE-2019-19083

-------------------------------------------------

In dcn*_clock_source_create when dcn20_clk_src_construct fails allocated
clk_src needs release.
Signed-off-by: NNavid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Conflicts:
  drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
[yyl: dcn20_resource.c is not merged in hulk-4.19]
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>