[PATCH] mtd: rawnand: gpmi: fix reference count leak due to pm_runtime_get_sync

[Aditya Pakki]

On calling pm_runtime_get_sync() the reference count of the device
is incremented. In case of failure, decrement the
reference count before returning the error.

Signed-off-by: Aditya Pakki <pakki...@umn.edu>
---
 drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c 
b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index 061a8ddda275..657c0be5c038 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -149,8 +149,10 @@ static int gpmi_init(struct gpmi_nand_data *this)
        int ret;
 
        ret = pm_runtime_get_sync(this->dev);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put_autosuspend(this->dev);
                return ret;
+       }
 
        ret = gpmi_reset_block(r->gpmi_regs, false);
        if (ret)
@@ -2264,8 +2266,10 @@ static int gpmi_nfc_exec_op(struct nand_chip *chip,
                this->transfers[i].direction = DMA_NONE;
 
        ret = pm_runtime_get_sync(this->dev);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put_autosuspend(this->dev);
                return ret;
+       }
 
        /*
         * This driver currently supports only one NAND chip. Plus, dies share
-- 
2.25.1