[PATCH 4.9 133/167] ata: pata_octeon_cf: Fix refcount leak in octeon_cf_probe

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@xxxxxxxxx>

[ Upstream commit 10d6bdf532902be1d8aa5900b3c03c5671612aa2 ]

of_find_device_by_node() takes reference, we should use put_device()
to release it when not need anymore.
Add missing put_device() to avoid refcount leak.

Fixes: 43f01da0f279 ("MIPS/OCTEON/ata: Convert pata_octeon_cf.c to use device tree.")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Reviewed-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/ata/pata_octeon_cf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index 7e6359e32ab6..fb07d16a9f2a 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -898,12 +898,14 @@ static int octeon_cf_probe(struct platform_device *pdev)
 				int i;
 				res_dma = platform_get_resource(dma_dev, IORESOURCE_MEM, 0);
 				if (!res_dma) {
+					put_device(&dma_dev->dev);
 					of_node_put(dma_node);
 					return -EINVAL;
 				}
 				cf_port->dma_base = (u64)devm_ioremap_nocache(&pdev->dev, res_dma->start,
 									 resource_size(res_dma));
 				if (!cf_port->dma_base) {
+					put_device(&dma_dev->dev);
 					of_node_put(dma_node);
 					return -EINVAL;
 				}
@@ -913,6 +915,7 @@ static int octeon_cf_probe(struct platform_device *pdev)
 					irq = i;
 					irq_handler = octeon_cf_interrupt;
 				}
+				put_device(&dma_dev->dev);
 			}
 			of_node_put(dma_node);
 		}
-- 
2.35.1