[libvirt] [PATCH 1/4] cmdVolCreateAs: Rework to follow usual func pattern

[Michal Privoznik]

The way we usually write functions is that we start the work and
if something goes bad we goto cleanup and roll back there. Or
just free resources that are no longer needed. Do the same here.

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 tools/virsh-volume.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/tools/virsh-volume.c b/tools/virsh-volume.c
index 35f0cbd..569f555 100644
--- a/tools/virsh-volume.c
+++ b/tools/virsh-volume.c
@@ -211,14 +211,15 @@ static bool
 cmdVolCreateAs(vshControl *ctl, const vshCmd *cmd)
 {
     virStoragePoolPtr pool;
-    virStorageVolPtr vol;
-    char *xml;
+    virStorageVolPtr vol = NULL;
+    char *xml = NULL;
     const char *name, *capacityStr = NULL, *allocationStr = NULL, *format = NULL;
     const char *snapshotStrVol = NULL, *snapshotStrFormat = NULL;
     unsigned long long capacity, allocation = 0;
     virBuffer buf = VIR_BUFFER_INITIALIZER;
     unsigned long flags = 0;
     virshControlPtr priv = ctl->privData;
+    bool ret = false;
 
     if (vshCommandOptBool(cmd, "prealloc-metadata"))
         flags |= VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA;
@@ -335,23 +336,22 @@ cmdVolCreateAs(vshControl *ctl, const vshCmd *cmd)
         goto cleanup;
     }
     xml = virBufferContentAndReset(&buf);
-    vol = virStorageVolCreateXML(pool, xml, flags);
-    VIR_FREE(xml);
-    virStoragePoolFree(pool);
 
-    if (vol != NULL) {
-        vshPrint(ctl, _("Vol %s created\n"), name);
-        virStorageVolFree(vol);
-        return true;
-    } else {
+    if (!(vol = virStorageVolCreateXML(pool, xml, flags))) {
         vshError(ctl, _("Failed to create vol %s"), name);
-        return false;
+        goto cleanup;
     }
 
+    vshPrint(ctl, _("Vol %s created\n"), name);
+    ret = true;
+
  cleanup:
     virBufferFreeAndReset(&buf);
+    if (vol)
+        virStorageVolFree(vol);
     virStoragePoolFree(pool);
-    return false;
+    VIR_FREE(xml);
+    return ret;
 }
 
 /*
-- 
2.4.10