[PATCH] spi: tegra114: missing put on pm_runtime_get_sync failure

[Navid Emamdoost]

the call to pm_runtime_get_sync increments the counter even 
in case of failure leading to incorrect ref count.
Call pm_runtime_put if pm_runtime_get_sync fails.

Signed-off-by: Navid Emamdoost <navid.emamdo...@gmail.com>
---
 drivers/spi/spi-tegra114.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index 83edabdb41ad..dccd2ac1a975 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -974,6 +974,7 @@ static int tegra_spi_setup(struct spi_device *spi)
                dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret);
                if (cdata)
                        tegra_spi_cleanup(spi);
+               pm_runtime_put(tspi->dev);
                return ret;
        }
 
@@ -1398,6 +1399,7 @@ static int tegra_spi_probe(struct platform_device *pdev)
        ret = pm_runtime_get_sync(&pdev->dev);
        if (ret < 0) {
                dev_err(&pdev->dev, "pm runtime get failed, e = %d\n", ret);
+               pm_runtime_put(&pdev->dev);
                goto exit_pm_disable;
        }
 
@@ -1479,6 +1481,7 @@ static int tegra_spi_resume(struct device *dev)
        ret = pm_runtime_get_sync(dev);
        if (ret < 0) {
                dev_err(dev, "pm runtime failed, e = %d\n", ret);
+               pm_runtime_put(dev);
                return ret;
        }
        tegra_spi_writel(tspi, tspi->command1_reg, SPI_COMMAND1);
-- 
2.17.1