of: Clean up of_update_property
After searching for the old property, bail out with -ENODEV if it was not found. It is unnecessary to check if oldprop is NULL before removing its binary file; the check was already done before. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NRob Herring <robh@kernel.org>
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