This issue was reported by static analysis. It is a false positive,
because both `rte_socket_count` and `rte_socket_id_by_idx` only report
information about physical sockets (so return value of -1 cannot happen,
as we only get into this function when socket ID parameter is -1, which
excludes external memory from consideration), but to avoid future false
positives, we can fix it here.

Coverity issue: 470137

Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com>
---
 lib/eal/common/malloc_heap.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/eal/common/malloc_heap.c b/lib/eal/common/malloc_heap.c
index f87a947a42..13a56e490e 100644
--- a/lib/eal/common/malloc_heap.c
+++ b/lib/eal/common/malloc_heap.c
@@ -710,8 +710,9 @@ malloc_get_numa_socket(void)
 
        /* for control threads, return first socket where memory is available */
        for (idx = 0; idx < rte_socket_count(); idx++) {
-               socket_id = rte_socket_id_by_idx(idx);
-               if (conf->numa_mem[socket_id] != 0)
+               int ret = rte_socket_id_by_idx(idx);
+               socket_id = (unsigned int)ret;
+               if (ret != -1 && conf->numa_mem[socket_id] != 0)
                        return socket_id;
        }
        /* We couldn't quickly find a NUMA node where memory was available,
-- 
2.47.1

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