tr: fix leakage of device in net/802/tr.c

Add dev_put() after dev_get_by_index() to avoid leakage
of device.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/802/tr.c b/net/802/tr.c
index e7eb130..e874447 100644 (file)
--- a/net/802/tr.c
+++ b/net/802/tr.c
@@ -561,6 +561,9 @@ static int rif_seq_show(struct seq_file *seq, void *v)
                                }
                                seq_putc(seq, '\n');
                        }
+
+               if (dev)
+                       dev_put(dev);
                }
        return 0;
 }