[libvirt] [PATCH v2] LXC: avoid useless duplicate memory free

[Gao feng]

when lxcContainerIdentifyCGroups failed, the memory it allocated
has been freed, so we should not free this memory again in
lxcContainerSetupPivortRoot and lxcContainerSetupExtraMounts.

Signed-off-by: Gao feng <gaofeng at cn.fujitsu.com>
---
 src/lxc/lxc_container.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index 9045a7d..24b1017 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -1323,7 +1323,7 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
     /* Before pivoting we need to identify any
      * cgroups controllers that are mounted */
     if (lxcContainerIdentifyCGroups(&mounts, &nmounts) < 0)
-        goto cleanup;
+        return -1;
 
     /* Gives us a private root, leaving all parent OS mounts on /.oldroot */
     if (lxcContainerPivotRoot(root) < 0)
@@ -1406,7 +1406,7 @@ static int lxcContainerSetupExtraMounts(virDomainDefPtr vmDef,
     /* Before replacing /sys we need to identify any
      * cgroups controllers that are mounted */
     if (lxcContainerIdentifyCGroups(&mounts, &nmounts) < 0)
-        goto cleanup;
+        return -1;
 
     /* Gets rid of any existing stuff under /proc, since we need new
      * namespace aware versions of those. We must do /proc second
-- 
1.7.7.6