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Coverity shows decaring variable reg without initializer. When regmap_read returns an error, reg keeps the value left from earlier computation. To prevent from the unexpected result in the case, assign 0 to reg. Signed-off-by: Trevor Wu <trevor.wu@mediatek.com> Link: https://lore.kernel.org/r/20230307040938.7484-5-trevor.wu@mediatek.com Signed-off-by: Mark Brown <broonie@kernel.org>