USB: r8a66597: clean up. remove unneeded null checks

td and dev can not be null.

Also they are dereferenced in list_for_each_entry_safe and list_for_each
before the check happens so we would have an oops if it were possible
for them to be null.

Found using the smatch static checker.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Acked-by: NYoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/r8a66597-hcd.c

@@ -822,8 +822,6 @@ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 		return;
 
 	list_for_each_entry_safe(td, next, list, queue) {
-		if (!td)
-			continue;
 		if (td->address != address)
 			continue;
 
@@ -2025,8 +2023,6 @@ static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
 	struct list_head *list = &r8a66597->child_device;
 
 	list_for_each_entry(dev, list, device_list) {
-		if (!dev)
-			continue;
 		if (dev->usb_address != addr)
 			continue;