drivers: most: use LIST_HEAD() for list_head

There's no need to declare a list and then init it manually,
just use the LIST_HEAD() macro.
Signed-off-by: Shixin Liu <liushixin2@huawei.com>
Link: https://lore.kernel.org/r/20210329094015.66942-2-liushixin2@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/most/most_cdev.c

@@ -44,7 +44,7 @@ struct comp_channel {
 };
 
 #define to_channel(d) container_of(d, struct comp_channel, cdev)
-static struct list_head channel_list;
+static LIST_HEAD(channel_list);
 static DEFINE_SPINLOCK(ch_list_lock);
 
 static inline bool ch_has_mbo(struct comp_channel *c)
@@ -494,7 +494,6 @@ static int __init mod_init(void)
 	if (IS_ERR(comp.class))
 		return PTR_ERR(comp.class);
 
-	INIT_LIST_HEAD(&channel_list);
 	ida_init(&comp.minor_id);
 
 	err = alloc_chrdev_region(&comp.devno, 0, CHRDEV_REGION_SIZE, "cdev");