ASoC: codecs: minor cppcheck cleanups

Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

Small number of cleanups that were either missed in previous versions
or detected by new cppcheck version.

sound/soc/codecs/hdmi-codec.c

@@ -20,10 +20,6 @@
 
 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN  -1
 
-struct hdmi_codec_channel_map_table {
-	unsigned char map;	/* ALSA API channel map position */
-};
-
 /*
  * CEA speaker placement for HDMI 1.4:
  *

sound/soc/codecs/wcd-mbhc-v2.c

@@ -1189,7 +1189,7 @@ static void wcd_correct_swch_plug(struct work_struct *work)
 				pt_gnd_mic_swap_cnt = 0;
 				plug_type = wcd_mbhc_get_plug_from_adc(mbhc, output_mv);
 				continue;
-			} else if (cross_conn < 0) /* Error */
+			} else /* Error if (cross_conn < 0) */
 				continue;
 
 			if (pt_gnd_mic_swap_cnt == GND_MIC_SWAP_THRESHOLD) {

sound/soc/codecs/wcd9335.c

@@ -1821,12 +1821,10 @@ static int wcd9335_set_decimator_rate(struct snd_soc_dai *dai,
 			tx_port_reg = WCD9335_CDC_IF_ROUTER_TX_MUX_CFG3;
 			shift = 0;
 			shift_val = 0x0F;
-		} else if (tx_port == 13) {
+		} else /* (tx_port == 13) */ {
 			tx_port_reg = WCD9335_CDC_IF_ROUTER_TX_MUX_CFG3;
 			shift = 4;
 			shift_val = 0x03;
-		} else {
-			return -EINVAL;
 		}
 
 		tx_mux_sel = snd_soc_component_read(comp, tx_port_reg) &

sound/soc/fsl/fsl_utils.c

@@ -124,7 +124,7 @@ void fsl_asoc_reparent_pll_clocks(struct device *dev, struct clk *clk,
 {
 	struct clk *p, *pll = NULL, *npll = NULL;
 	bool reparent = false;
-	int ret = 0;
+	int ret;
 
 	if (!clk || !pll8k_clk || !pll11k_clk)
 		return;

sound/soc/ti/omap-mcbsp.c

@@ -614,7 +614,7 @@ static int omap_mcbsp_init(struct platform_device *pdev)
 {
 	struct omap_mcbsp *mcbsp = platform_get_drvdata(pdev);
 	struct resource *res;
-	int ret = 0;
+	int ret;
 
 	spin_lock_init(&mcbsp->lock);
 	mcbsp->free = true;