usb: f_mass_storage: Make use of the helper macro kthread_run()

Replace kthread_create/wake_up_process() with kthread_run()
to simplify the code.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240903014249.3098082-1-lihongbo22@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/function/f_mass_storage.c

@@ -3050,7 +3050,7 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
 	if (!common->thread_task) {
 		common->state = FSG_STATE_NORMAL;
 		common->thread_task =
-			kthread_create(fsg_main_thread, common, "file-storage");
+			kthread_run(fsg_main_thread, common, "file-storage");
 		if (IS_ERR(common->thread_task)) {
 			ret = PTR_ERR(common->thread_task);
 			common->thread_task = NULL;
@@ -3059,7 +3059,6 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
 		}
 		DBG(common, "I/O thread pid: %d\n",
 		    task_pid_nr(common->thread_task));
-		wake_up_process(common->thread_task);
 	}
 
 	fsg->gadget = gadget;