drm/amd/display: Fix incorrect pointer assignment

[Why]
Pointer initialization and assignment for dml2_options is not done
correctly. While this works for some compilers, others give an error.

[How]
Modify dc_state_create code to correctly initialize the dml2_opt pointer
and pass it to dml2_create. Also update the code with correct derefrence
operations.
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Chaitanya Dhere <chaitanya.dhere@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/core/dc_state.c

@@ -191,7 +191,7 @@ static void init_state(struct dc *dc, struct dc_state *state)
 struct dc_state *dc_state_create(struct dc *dc, struct dc_state_create_params *params)
 {
 #ifdef CONFIG_DRM_AMD_DC_FP
-	struct dml2_configuration_options dml2_opt = dc->dml2_options;
+	struct dml2_configuration_options *dml2_opt = &dc->dml2_options;
 #endif
 	struct dc_state *state = kvzalloc(sizeof(struct dc_state),
 			GFP_KERNEL);
@@ -205,11 +205,11 @@ struct dc_state *dc_state_create(struct dc *dc, struct dc_state_create_params *p
 
 #ifdef CONFIG_DRM_AMD_DC_FP
 	if (dc->debug.using_dml2) {
-		dml2_opt.use_clock_dc_limits = false;
-		dml2_create(dc, &dml2_opt, &state->bw_ctx.dml2);
+		dml2_opt->use_clock_dc_limits = false;
+		dml2_create(dc, dml2_opt, &state->bw_ctx.dml2);
 
-		dml2_opt.use_clock_dc_limits = true;
-		dml2_create(dc, &dml2_opt, &state->bw_ctx.dml2_dc_power_source);
+		dml2_opt->use_clock_dc_limits = true;
+		dml2_create(dc, dml2_opt, &state->bw_ctx.dml2_dc_power_source);
 	}
 #endif