drm/amd/display: Always exit DMCUB idle when called

[Why]
dc->idle_optimizations_allowed may be desynced with the hardware state.

[How]
Make sure we always exit out when dc_dmub_srv_exit_low_power_state is
called by removing the check.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Sung joon Kim <sungjoon.kim@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c

@@ -1222,9 +1222,6 @@ static void dc_dmub_srv_exit_low_power_state(const struct dc *dc)
 	if (dc->debug.dmcub_emulation)
 		return;
 
-	if (!dc->idle_optimizations_allowed)
-		return;
-
 	if (!dc->ctx->dmub_srv || !dc->ctx->dmub_srv->dmub)
 		return;