drm/meson: plane: Add error handling

This patch adds robust error handling to the meson_plane_create
function in drivers/gpu/drm/meson/meson_plane.c. The function
previously lacked proper handling for potential failure scenarios
of the drm_universal_plane_init call.
Signed-off-by: Haoran Liu <liuhaoran14@163.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231129113405.33057-1-liuhaoran14@163.com
[narmstrong: fixe the commit subject]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231129113405.33057-1-liuhaoran14@163.com

drivers/gpu/drm/meson/meson_plane.c

@@ -534,6 +534,7 @@ int meson_plane_create(struct meson_drm *priv)
 	struct meson_plane *meson_plane;
 	struct drm_plane *plane;
 	const uint64_t *format_modifiers = format_modifiers_default;
+	int ret;
 
 	meson_plane = devm_kzalloc(priv->drm->dev, sizeof(*meson_plane),
 				   GFP_KERNEL);
@@ -548,12 +549,16 @@ int meson_plane_create(struct meson_drm *priv)
 	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		format_modifiers = format_modifiers_afbc_g12a;
 
-	drm_universal_plane_init(priv->drm, plane, 0xFF,
-				 &meson_plane_funcs,
-				 supported_drm_formats,
-				 ARRAY_SIZE(supported_drm_formats),
-				 format_modifiers,
-				 DRM_PLANE_TYPE_PRIMARY, "meson_primary_plane");
+	ret = drm_universal_plane_init(priv->drm, plane, 0xFF,
+					&meson_plane_funcs,
+					supported_drm_formats,
+					ARRAY_SIZE(supported_drm_formats),
+					format_modifiers,
+					DRM_PLANE_TYPE_PRIMARY, "meson_primary_plane");
+	if (ret) {
+		devm_kfree(priv->drm->dev, meson_plane);
+		return ret;
+	}
 
 	drm_plane_helper_add(plane, &meson_plane_helper_funcs);