qemu_domain: Don't leak @paths in qemuDomainNamespaceSetupDisk

Introduced in d3db304d. Instead of returning immediately we
need to jump onto cleanup label where @paths is freed.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_domain.c

@@ -11199,7 +11199,7 @@ qemuDomainNamespaceSetupDisk(virDomainObjPtr vm,
     }
 
     if (qemuDomainNamespaceMknodPaths(vm, paths, npaths) < 0)
-        return -1;
+        goto cleanup;
 
     ret = 0;
  cleanup: