panel/tpo-td043mtea1: Use refcounted allocation in place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel.

Reviewed-by: Neil Armstrong <[e-mail]>
Signed-off-by: Anusha Srivatsa <[e-mail]>
Link: https://lore.kernel.org/r/20[e-mail]
Signed-off-by: Maxime Ripard <[e-mail]>

drivers/gpu/drm/panel/panel-tpo-td043mtea1.c

···
 	struct td043mtea1_panel *lcd;
 	int ret;
 
-	lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);
-	if (lcd == NULL)
-		return -ENOMEM;
+	lcd = devm_drm_panel_alloc(&spi->dev, struct td043mtea1_panel, panel,
+				   &td043mtea1_funcs, DRM_MODE_CONNECTOR_DPI);
+	if (IS_ERR(lcd))
+		return PTR_ERR(lcd);
 
 	spi_set_drvdata(spi, lcd);
 	lcd->spi = spi;
···
 		dev_err(&spi->dev, "failed to create sysfs files\n");
 		return ret;
 	}
-
-	drm_panel_init(&lcd->panel, &lcd->spi->dev, &td043mtea1_funcs,
-		       DRM_MODE_CONNECTOR_DPI);
 
 	drm_panel_add(&lcd->panel);