media: xilinx-tpg: fix double put in xtpg_parse_of()

This loop was recently converted to use for_each_of_graph_port() which
automatically does __cleanup__ on the "port" iterator variable.  Delete
the calls to of_node_put(port) to avoid a double put bug.

Fixes: 393194c ("media: xilinx-tpg: use new of_graph functions")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

Author: Dan Carpenter

drivers/media/platform/xilinx/xilinx-tpg.c

@@ -722,7 +722,6 @@ static int xtpg_parse_of(struct xtpg_device *xtpg)
 		format = xvip_of_get_format(port);
 		if (IS_ERR(format)) {
 			dev_err(dev, "invalid format in DT");
-			of_node_put(port);
 			return PTR_ERR(format);
 		}
 
@@ -731,7 +730,6 @@ static int xtpg_parse_of(struct xtpg_device *xtpg)
 			xtpg->vip_format = format;
 		} else if (xtpg->vip_format != format) {
 			dev_err(dev, "in/out format mismatch in DT");
-			of_node_put(port);
 			return -EINVAL;
 		}