cifs: avoid unused variable and label

The newly introduced cifs_clone_file_range() function produces
two harmless compile-time warnings:

cifsfs.c: In function 'cifs_clone_file_range':
cifsfs.c:963:1: warning: label 'out_unlock' defined but not used [-Wunused-label]
cifsfs.c:924:20: warning: unused variable 'src_tcon' [-Wunused-variable]

In both cases, removing the extraneous line avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: c6f2a1e2e5f8 ("vfs: pull btrfs clone API to vfs layer")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/cifs/cifsfs.c

@@ -921,7 +921,6 @@ static int cifs_clone_file_range(struct file *src_file, loff_t off,
 	struct inode *target_inode = file_inode(dst_file);
 	struct cifsFileInfo *smb_file_src = src_file->private_data;
 	struct cifsFileInfo *smb_file_target = dst_file->private_data;
-	struct cifs_tcon *src_tcon = tlink_tcon(smb_file_src->tlink);
 	struct cifs_tcon *target_tcon = tlink_tcon(smb_file_target->tlink);
 	unsigned int xid;
 	int rc;
@@ -960,7 +959,6 @@ static int cifs_clone_file_range(struct file *src_file, loff_t off,
 	/* force revalidate of size and timestamps of target file now
 	   that target is updated on the server */
 	CIFS_I(target_inode)->time = 0;
-out_unlock:
 	/* although unlocking in the reverse order from locking is not
 	   strictly necessary here it is a little cleaner to be consistent */
 	unlock_two_nondirectories(src_inode, target_inode);