drm/amdgpu/display: fix memory leak for dimgrey cavefish

We need to clean up the dcn3 clk_mgr.
Acked-by: NNirmoy Das <nirmoy.das@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -275,6 +275,9 @@ void dc_destroy_clk_mgr(struct clk_mgr *clk_mgr_base)
 		if (ASICREV_IS_SIENNA_CICHLID_P(clk_mgr_base->ctx->asic_id.hw_internal_rev)) {
 			dcn3_clk_mgr_destroy(clk_mgr);
 		}
+		if (ASICREV_IS_DIMGREY_CAVEFISH_P(clk_mgr_base->ctx->asic_id.hw_internal_rev)) {
+			dcn3_clk_mgr_destroy(clk_mgr);
+		}
 		break;
 
 	case FAMILY_VGH: