pwm: brcmstb: Checked clk_prepare_enable() return value
Check the clk_prepare_enable() return value and propagate it. Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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