[PATCH -next] drm/amd/display: Remove redundant assignment to variable dc

[Yi Yang]

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.

Signed-off-by: Yi Yang <yiyan...@huawei.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c 
b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 20e534f73513..78d31bb875d1 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -408,7 +408,7 @@ bool dc_stream_set_cursor_position(
        struct dc_stream_state *stream,
        const struct dc_cursor_position *position)
 {
-       struct dc  *dc = stream->ctx->dc;
+       struct dc *dc;
        bool reset_idle_optimizations = false;
 
        if (NULL == stream) {
-- 
2.17.1