diff --git a/drivers/video/rockchip/rk_fb.c b/drivers/video/rockchip/rk_fb.c
index 38379dffc09d..d4de585b3dc9 100644
--- a/drivers/video/rockchip/rk_fb.c
+++ b/drivers/video/rockchip/rk_fb.c
@@ -3224,6 +3224,7 @@ int rk_fb_switch_screen(struct rk_screen *screen, int enable, int lcdc_id)
 		if (dev_drv->cur_screen->type != screen->type) {
 			dev_drv->hdmi_switch = 0;
 			mutex_unlock(&dev_drv->switch_screen);
+			kfree(envp[1]);
 			return 0;
 		}