block/rnbd-clt-sysfs: fix a couple uninitialized variable bugs

These variables are printed on the error path if match_int() fails so
they have to be initialized.

Fixes: 2958a995 ("block/rnbd-clt: Support polling mode for IO latency optimization")
Fixes: 1eb54f8f ("block/rnbd: client: sysfs interface functions")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Gioh Kim <gi-oh.kim@ionos.com>
Link: https://lore.kernel.org/r/20211012084443.GA31472@kiliSigned-off-by: Jens Axboe <axboe@kernel.dk>

drivers/block/rnbd/rnbd-clt-sysfs.c

@@ -71,8 +71,10 @@ static int rnbd_clt_parse_map_options(const char *buf, size_t max_path_cnt,
 	int opt_mask = 0;
 	int token;
 	int ret = -EINVAL;
-	int i, dest_port, nr_poll_queues;
+	int nr_poll_queues = 0;
+	int dest_port = 0;
 	int p_cnt = 0;
+	int i;
 
 	options = kstrdup(buf, GFP_KERNEL);
 	if (!options)