[PATCH 6.1 140/239] remoteproc: imx_rproc: Call of_node_put() on iteration error

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From: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>

commit 5ef074e805ecfd9a16dbb7b6b88bbfa8abad7054 upstream.

Function of_phandle_iterator_next() calls of_node_put() on the last
device_node it iterated over, but when the loop exits prematurely it has
to be called explicitly.

Fixes: b29b4249f8f0 ("remoteproc: imx_rproc: add i.MX specific parse fw hook")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Reviewed-by: Peng Fan <peng.fan@xxxxxxx>
Link: https://lore.kernel.org/r/20230320221826.2728078-5-mathieu.poirier@xxxxxxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/remoteproc/imx_rproc.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -460,6 +460,7 @@ static int imx_rproc_prepare(struct rpro
 
 		rmem = of_reserved_mem_lookup(it.node);
 		if (!rmem) {
+			of_node_put(it.node);
 			dev_err(priv->dev, "unable to acquire memory-region\n");
 			return -EINVAL;
 		}
@@ -472,10 +473,12 @@ static int imx_rproc_prepare(struct rpro
 					   imx_rproc_mem_alloc, imx_rproc_mem_release,
 					   it.node->name);
 
-		if (mem)
+		if (mem) {
 			rproc_coredump_add_segment(rproc, da, rmem->size);
-		else
+		} else {
+			of_node_put(it.node);
 			return -ENOMEM;
+		}
 
 		rproc_add_carveout(rproc, mem);
 	}





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