drm/radeon: Avoid power table parsing memory leaks
stable inclusion from stable-5.10.38 commit 93dcaa8cba6561f796bcc1d53e57b1e4c9ab33cc bugzilla: 51875 CVE: NA -------------------------------- [ Upstream commit c69f2713 ] Avoid leaving a hanging pre-allocated clock_info if last mode is invalid, and avoid heap corruption if no valid modes are found. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=211537 Fixes: 6991b8f2 ("drm/radeon/kms: fix segfault in pm rework") Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NAlex Deucher <alexander.deucher@amd.com> Signed-off-by: NSasha Levin <sashal@kernel.org> Signed-off-by: NChen Jun <chenjun102@huawei.com> Acked-by: NWeilong Chen <chenweilong@huawei.com> Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
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