[PATCH] at73c213: Fix error checking for clk API.

[Atsushi Nemoto]

The clk_round_rate() and clk_set_rate() will return int, so not store
thier return value to unsigned long variable.  This bug hides real
error on these API.

Signed-off-by: Atsushi Nemoto <anemo@xxxxxxxxxxxxx>
---
diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c
index 89d6e9c..d130552 100644
--- a/sound/spi/at73c213.c
+++ b/sound/spi/at73c213.c
@@ -133,7 +133,8 @@ static struct snd_pcm_hardware snd_at73c213_playback_hw = {
 static int snd_at73c213_set_bitrate(struct snd_at73c213 *chip)
 {
 	unsigned long ssc_rate = clk_get_rate(chip->ssc->clk);
-	unsigned long dac_rate_new, ssc_div, status;
+	unsigned long dac_rate_new, ssc_div;
+	int status;
 	unsigned long ssc_div_max, ssc_div_min;
 	int max_tries;
 
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