[PATCH] rapidio: fix the missed put_device() for rio_mport_add_riodev

[Jing Xiangfeng]

rio_mport_add_riodev() misses to call put_device() when the device
already exists. Add the missed function call to fix it.

Fixes: e8de370188d0 ("rapidio: add mport char device driver")
Signed-off-by: Jing Xiangfeng <jingxiangf...@huawei.com>
---
 drivers/rapidio/devices/rio_mport_cdev.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/rapidio/devices/rio_mport_cdev.c 
b/drivers/rapidio/devices/rio_mport_cdev.c
index a30342942e26..829fe2b7c437 100644
--- a/drivers/rapidio/devices/rio_mport_cdev.c
+++ b/drivers/rapidio/devices/rio_mport_cdev.c
@@ -1679,6 +1679,7 @@ static int rio_mport_add_riodev(struct mport_cdev_priv 
*priv,
        struct rio_dev *rdev;
        struct rio_switch *rswitch = NULL;
        struct rio_mport *mport;
+       struct device *dev;
        size_t size;
        u32 rval;
        u32 swpinfo = 0;
@@ -1693,8 +1694,10 @@ static int rio_mport_add_riodev(struct mport_cdev_priv 
*priv,
        rmcd_debug(RDEV, "name:%s ct:0x%x did:0x%x hc:0x%x", dev_info.name,
                   dev_info.comptag, dev_info.destid, dev_info.hopcount);
 
-       if (bus_find_device_by_name(&rio_bus_type, NULL, dev_info.name)) {
+       dev = bus_find_device_by_name(&rio_bus_type, NULL, dev_info.name);
+       if (dev) {
                rmcd_debug(RDEV, "device %s already exists", dev_info.name);
+               put_device(dev);
                return -EEXIST;
        }
 
-- 
2.17.1