drm/amd/display: remove redundant initialization of variable result

The variable result is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c

@@ -1017,7 +1017,7 @@ enum dc_status dce112_add_stream_to_ctx(
 		struct dc_state *new_ctx,
 		struct dc_stream_state *dc_stream)
 {
-	enum dc_status result = DC_ERROR_UNEXPECTED;
+	enum dc_status result;
 
 	result = resource_map_pool_resources(dc, new_ctx, dc_stream);