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Smatch report warning as follows: Line 53679: drivers/gpu/drm/amd/display/dc/core/dc_stream.c:402 dc_stream_set_cursor_position() warn: variable dereferenced before check 'stream' The value of 'dc' has been assigned after check whether 'stream' is NULL. Fix it by remove redundant assignment. Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Yi Yang <yiyang13@huawei.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>