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 <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/most/most_cdev.c

···
 };
 
 #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)
···
 	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");