msm_serial: add missing iounmap() on error in msm_request_port()
Add the missing iounmap() before return from msm_request_port() in the error handling case. Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: NIvan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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