ASoC: SOF: Intel: reset link_mask before adding new bits

link_mask is set to hdev->info.link_mask at the beginning of
hda_sdw_machine_select(). However, some SDW links may not have any
peripheral connected. We should set the mask bits where at least one
peripheral is connected.

Fixes: 5226d19 ("ASoC: SOF: Intel: use sof_sdw as default SDW machine driver")
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>

Author: bardliao

sound/soc/sof/intel/hda.c

@@ -1300,7 +1300,7 @@ static struct snd_soc_acpi_mach *hda_sdw_machine_select(struct snd_sof_dev *sdev
 	struct sof_intel_hda_dev *hdev;
 	int link_index, link_num;
 	int amp_index = 1;
-	u32 link_mask = 0;
+	u32 link_mask;
 	int i;
 
 	hdev = pdata->hw_pdata;
@@ -1392,6 +1392,7 @@ static struct snd_soc_acpi_mach *hda_sdw_machine_select(struct snd_sof_dev *sdev
 		return NULL;
 
 	/* Get link mask and link number */
+	link_mask = 0;
 	for (i = 0; i < peripherals->num_peripherals; i++)
 		link_mask |= BIT(peripherals->array[i]->bus->link_id);