ACPI: CPPC: Drop redundant local variable from cpc_read()
The ret_val local variable in cpc_read() is not necessary, so eliminate it. No functional impact. Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: NHuang Rui <ray.huang@amd.com>
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