drm/amd/display: Remove the unneeded result variable

Return the enable_link_dp() directly instead of storing it in another
redundant variable.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: zhang songyi <zhang.songyi@zte.com.cn>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -2077,11 +2077,7 @@ static enum dc_status enable_link_edp(
 		struct dc_state *state,
 		struct pipe_ctx *pipe_ctx)
 {
-	enum dc_status status;
-
-	status = enable_link_dp(state, pipe_ctx);
-
-	return status;
+	return enable_link_dp(state, pipe_ctx);
 }
 
 static enum dc_status enable_link_dp_mst(