On error, delete mutex object created during method mutex creation.
Reported by tim.gardner@canonical.com.
Signed-off-by: NTim Gardner <tim.gardner@canonical.com>
Signed-off-by: NBob Moore <robert.moore@intel.com>
Signed-off-by: NLv Zheng <lv.zheng@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>