fix braino in fs: do not assign default i_ino in new_inode

usbfs_get_inode() is something completely different...

Bogosity introduced by commit 85fe4025c616 ("fs: do not assign default
i_ino in new_inode").

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index e093fd8..f276e95 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -980,7 +980,7 @@
 	if (likely(inode)) {
 		struct timespec current_time = CURRENT_TIME;
 
-		inode->i_ino	 = usbfs_get_inode();
+		inode->i_ino	 = get_next_ino();
 		inode->i_mode    = perms->mode;
 		inode->i_uid     = perms->uid;
 		inode->i_gid     = perms->gid;