ASoC: Intel: sof_cirrus_common: Guard against missing buses

Even if we find a acpi device we can still be missing the physical node.
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230419195524.46995-2-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/sof_cirrus_common.c

@@ -168,11 +168,16 @@ static int cs35l41_compute_codec_conf(void)
 			continue;
 		}
 		physdev = get_device(acpi_get_first_physical_node(adev));
+		acpi_dev_put(adev);
+		if (!physdev) {
+			pr_devel("Cannot find physical node for HID %s UID %u (%s)\n", CS35L41_HID,
+					uid, cs35l41_name_prefixes[uid]);
+			return 0;
+		}
 		cs35l41_components[sz].name = dev_name(physdev);
 		cs35l41_components[sz].dai_name = CS35L41_CODEC_DAI;
 		cs35l41_codec_conf[sz].dlc.name = dev_name(physdev);
 		cs35l41_codec_conf[sz].name_prefix = cs35l41_name_prefixes[uid];
-		acpi_dev_put(adev);
 		sz++;
 	}