pwm: imx27: Propagate errors in .get_state() to the caller

.get_state() can return an error indication. Make use of it to propagate
failing hardware accesses.

Acked-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

Author: Uwe Kleine-König

drivers/pwm/pwm-imx27.c

@@ -128,7 +128,7 @@ static int pwm_imx27_get_state(struct pwm_chip *chip,
 
 	ret = pwm_imx27_clk_prepare_enable(imx);
 	if (ret < 0)
-		return 0;
+		return ret;
 
 	val = readl(imx->mmio_base + MX3_PWMCR);