io_uring: remove the mode variable in io_file_get_flags

The variable is only once now, so don't bother with it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230620113235.920399-3-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

io_uring/io_uring.c

@@ -1773,10 +1773,9 @@ static void io_iopoll_req_issued(struct io_kiocb *req, unsigned int issue_flags)
  */
 unsigned int io_file_get_flags(struct file *file)
 {
-	umode_t mode = file_inode(file)->i_mode;
 	unsigned int res = 0;
 
-	if (S_ISREG(mode))
+	if (S_ISREG(file_inode(file)->i_mode))
 		res |= FFS_ISREG;
 	if ((file->f_flags & O_NONBLOCK) || (file->f_mode & FMODE_NOWAIT))
 		res |= FFS_NOWAIT;