ASoC: Intel: Skylake: Don't unload module when in use

A module may have multiple instances in DSP, so unload only when usage
count is zero.
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NJeeja KP <jeeja.kp@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-sst.c

@@ -417,6 +417,11 @@ static int skl_unload_module(struct sst_dsp *ctx, u16 mod_id)
 		dev_err(ctx->dev, "Module bad usage cnt!:%d\n", usage_cnt);
 		return -EIO;
 	}
+
+	/* if module is used by others return, no need to unload */
+	if (usage_cnt > 0)
+		return 0;
+
 	ret = skl_ipc_unload_modules(&skl->ipc,
 			SKL_NUM_MODULES, &mod_id);
 	if (ret < 0) {