[PATCH] net: qrtr: fix memort leak in qrtr_tun_write_iter

[Navid Emamdoost]

In qrtr_tun_write_iter the allocated kbuf should be release in case of
error happening.

Signed-off-by: Navid Emamdoost <navid.emamdo...@gmail.com>
---
 net/qrtr/tun.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/net/qrtr/tun.c b/net/qrtr/tun.c
index ccff1e544c21..1dba8b92560e 100644
--- a/net/qrtr/tun.c
+++ b/net/qrtr/tun.c
@@ -84,12 +84,18 @@ static ssize_t qrtr_tun_write_iter(struct kiocb *iocb, 
struct iov_iter *from)
        if (!kbuf)
                return -ENOMEM;
 
-       if (!copy_from_iter_full(kbuf, len, from))
+       if (!copy_from_iter_full(kbuf, len, from)) {
+               kfree(kbuf);
                return -EFAULT;
+       }
 
        ret = qrtr_endpoint_post(&tun->ep, kbuf, len);
+       if (ret < 0) {
+               kfree(kbuf);
+               return ret;
+       }
 
-       return ret < 0 ? ret : len;
+       return len;
 }
 
 static __poll_t qrtr_tun_poll(struct file *filp, poll_table *wait)
-- 
2.17.1