staging: lustre: llite: fixup return value ll_direct_IO_26

Return the correct values from ll_direct_IO_26.
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4069
Reviewed-on: http://review.whamcloud.com/8080Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-Off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/llite/rw26.c

@@ -446,7 +446,7 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
 	}
 
 	cl_env_put(env, &refcheck);
-	return tot_bytes ? : result;
+	return tot_bytes ? tot_bytes : result;
 }
 
 /**