[PATCH 5/5] retmoteproc: imx_dsp_rproc: Call of_node_put() on iteration error

[Mathieu Poirier]

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: ec0e5549f358 ("remoteproc: imx_dsp_rproc: Add remoteproc driver for DSP on i.MX")
Cc: stable at vger.kernel.org
Signed-off-by: Mathieu Poirier <mathieu.poirier at linaro.org>
---
 drivers/remoteproc/imx_dsp_rproc.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c
index b8f268d41773..21759d9e5b7b 100644
--- a/drivers/remoteproc/imx_dsp_rproc.c
+++ b/drivers/remoteproc/imx_dsp_rproc.c
@@ -650,15 +650,19 @@ static int imx_dsp_rproc_add_carveout(struct imx_dsp_rproc *priv)
 
 		rmem = of_reserved_mem_lookup(it.node);
 		if (!rmem) {
+			of_node_put(it.node);
 			dev_err(dev, "unable to acquire memory-region\n");
 			return -EINVAL;
 		}
 
-		if (imx_dsp_rproc_sys_to_da(priv, rmem->base, rmem->size, &da))
+		if (imx_dsp_rproc_sys_to_da(priv, rmem->base, rmem->size, &da)) {
+			of_node_put(it.node);
 			return -EINVAL;
+		}
 
 		cpu_addr = devm_ioremap_wc(dev, rmem->base, rmem->size);
 		if (!cpu_addr) {
+			of_node_put(it.node);
 			dev_err(dev, "failed to map memory %p\n", &rmem->base);
 			return -ENOMEM;
 		}
@@ -667,10 +671,12 @@ static int imx_dsp_rproc_add_carveout(struct imx_dsp_rproc *priv)
 		mem = rproc_mem_entry_init(dev, (void __force *)cpu_addr, (dma_addr_t)rmem->base,
 					   rmem->size, da, NULL, NULL, 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);
 	}
-- 
2.25.1