libhsakmt: Handle unaccessible p2p_links

Device cgroup can limit accessible devices. Handle the cases where
p2p_links are not accessible



Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Change-Id: I513dc75ad14e4f2d426cf2fbd301bcba12b4ee54

src/topology.c

@@ -1476,7 +1476,8 @@ static HSAKMT_STATUS topology_sysfs_get_iolink_props(uint32_t node_id,
 
 	read_size = fread(read_buf, 1, PAGE_SIZE, fd);
 	if (read_size <= 0) {
-		ret = HSAKMT_STATUS_ERROR;
+		ret = (errno == EPERM) ? HSAKMT_STATUS_NOT_SUPPORTED :
+					 HSAKMT_STATUS_ERROR;
 		goto err2;
 	}