drm/amd/display: Deallocate DML 2.1 Memory Allocation

[Why]
DML 2.1 allocates two types of memory in its ctx structure but does not
destroy them, causing memory leak whenever DML 2.1 instance is created
and destroyed.

[How]
Deallocate two instances of allocated memory whenever DML 2.1 is
destroyed.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Chris Park <chris.park@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.c

@@ -107,6 +107,12 @@ bool dml21_create(const struct dc *in_dc, struct dml2_context **dml_ctx, const s
 	return true;
 }
 
+void dml21_destroy(struct dml2_context *dml2)
+{
+	kfree(dml2->v21.dml_init.dml2_instance);
+	kfree(dml2->v21.mode_programming.programming);
+}
+
 static void dml21_calculate_rq_and_dlg_params(const struct dc *dc, struct dc_state *context, struct resource_context *out_new_hw_state,
 	struct dml2_context *in_ctx, unsigned int pipe_cnt)
 {

drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_wrapper.h

@@ -27,6 +27,7 @@ struct dml2_context;
  * Return: True if dml2 is successfully created, false otherwise.
  */
 bool dml21_create(const struct dc *in_dc, struct dml2_context **dml_ctx, const struct dml2_configuration_options *config);
+void dml21_destroy(struct dml2_context *dml2);
 void dml21_copy(struct dml2_context *dst_dml_ctx,
 	struct dml2_context *src_dml_ctx);
 bool dml21_create_copy(struct dml2_context **dst_dml_ctx,

drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c

@@ -782,6 +782,8 @@ void dml2_destroy(struct dml2_context *dml2)
 	if (!dml2)
 		return;
 
+	if (dml2->architecture == dml2_architecture_21)
+		dml21_destroy(dml2);
 	kfree(dml2);
 }