radeon/uvd: fix a h265 context size bug

Signed-off-by: sonjiang <sonny.jiang@amd.com>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
1 file changed