qemu: move virDomainLiveConfigHelperMethod right after BeginJob

We should call virDomainLiveConfigHelperMethod ASAP because this
function transfers VIR_DOMAIN_AFFECT_CURRENT to VIR_DOMAIN_AFFECT_LIVE
or VIR_DOMAIN_AFFECT_CONFIG.  All other additional checks for those two
flags should consider that the user give us VIR_DOMAIN_AFFECT_CURRENT.

Remove the unnecessary check whether the domain is live in case of
VIR_DOMAIN_VCPU_GUEST because this check is done by
virDomainLiveConfigHelperMethod.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

src/qemu/qemu_driver.c

@@ -4887,6 +4887,10 @@ qemuDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
     if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
         goto cleanup;
 
+    if (virDomainLiveConfigHelperMethod(caps, driver->xmlopt, vm, &flags,
+                                        &persistentDef) < 0)
+        goto endjob;
+
     if (flags & VIR_DOMAIN_AFFECT_LIVE && !(flags & VIR_DOMAIN_VCPU_GUEST)) {
         if (virCgroupNewEmulator(priv->cgroup, false, &cgroup_temp) < 0)
             goto endjob;
@@ -4905,10 +4909,6 @@ qemuDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
     maximum = (flags & VIR_DOMAIN_VCPU_MAXIMUM) != 0;
     flags &= ~VIR_DOMAIN_VCPU_MAXIMUM;
 
-    if (virDomainLiveConfigHelperMethod(caps, driver->xmlopt, vm, &flags,
-                                        &persistentDef) < 0)
-        goto endjob;
-
     /* MAXIMUM cannot be mixed with LIVE.  */
     if (maximum && (flags & VIR_DOMAIN_AFFECT_LIVE)) {
         virReportError(VIR_ERR_INVALID_ARG, "%s",
@@ -4956,12 +4956,6 @@ qemuDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
         if (ncpuinfo < 0)
             goto endjob;
 
-        if (!virDomainObjIsActive(vm)) {
-            virReportError(VIR_ERR_OPERATION_INVALID, "%s",
-                           _("domain is not running"));
-            goto endjob;
-        }
-
         if (qemuAgentUpdateCPUInfo(nvcpus, cpuinfo, ncpuinfo) < 0)
             goto endjob;