[PATCH] e1000: avoid leak when e1000_setup_loopback_test fails

In e1000_loopback_test, make sure to call e1000_free_desc_rings if
e1000_setup_loopback_test fails.  Currently in that case it will not
get called, causing a leak.

Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index 8eae8ba27e84..8584e9382c2c 100644
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -1440,9 +1440,11 @@ static int
 e1000_loopback_test(struct e1000_adapter *adapter, uint64_t *data)
 {
         if((*data = e1000_setup_desc_rings(adapter))) goto err_loopback;
-        if((*data = e1000_setup_loopback_test(adapter))) goto err_loopback;
+        if((*data = e1000_setup_loopback_test(adapter)))
+                goto err_loopback_setup;
         *data = e1000_run_loopback_test(adapter);
         e1000_loopback_cleanup(adapter);
+err_loopback_setup:
         e1000_free_desc_rings(adapter);
 err_loopback:
         return *data;