We have to set "ret", not "err" in case of an error.
Reported-and-tested-by: NRichard Genoud <richard.genoud@gmail.com>
Signed-off-by: NRichard Weinberger <richard@nod.at>
Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>