ASoC: fsl: fsl_spdif: Check for clk_prepare_enable() error
clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com> Acked-by: NNicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: NMark Brown <broonie@kernel.org>
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