drm/amd/display: Memory was freed twice during disable

1. get_ss_info_from_atombios function was allocating the memory populating the provided pointer
but them freeing the memory.
Since the pointer was return as a valid value, we are trying to free the same memory during clock resource destruction

Signed-off-by: Leon Elazar <leon.elazar@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c

@@ -1035,7 +1035,6 @@ static void get_ss_info_from_atombios(
 	}
 
 	*spread_spectrum_data = ss_data;
-	dm_free(ss_data);
 	dm_free(ss_info);
 	return;