[PATCH] i2c: busses: Fix reference count leaks.

[wu000273]

From: Qiushi Wu <wu000...@umn.edu>

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus call pm_runtime_put_noidle()
if pm_runtime_get_sync() fails.

Signed-off-by: Qiushi Wu <wu000...@umn.edu>
---
 drivers/i2c/busses/i2c-img-scb.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c
index 98a89301ed2a..e13ca862fa97 100644
--- a/drivers/i2c/busses/i2c-img-scb.c
+++ b/drivers/i2c/busses/i2c-img-scb.c
@@ -1058,8 +1058,10 @@ static int img_i2c_xfer(struct i2c_adapter *adap, struct 
i2c_msg *msgs,
        }
 
        ret = pm_runtime_get_sync(adap->dev.parent);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put_noidle(adap->dev.parent);
                return ret;
+       }
 
        for (i = 0; i < num; i++) {
                struct i2c_msg *msg = &msgs[i];
@@ -1159,8 +1161,10 @@ static int img_i2c_init(struct img_i2c *i2c)
        int ret;
 
        ret = pm_runtime_get_sync(i2c->adap.dev.parent);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put_noidle(i2c->adap.dev.parent);
                return ret;
+       }
 
        rev = img_i2c_readl(i2c, SCB_CORE_REV_REG);
        if ((rev & 0x00ffffff) < 0x00020200) {
-- 
2.17.1