[Intel-wired-lan] [PATCH] idpf: nullify pointers after they are freed

[Li Li via Intel-wired-lan]

rss_data->rss_key and vport->q_vector_idxs need to be nullified after
they are freed. Checks like "if (!rss_data->rss_key)" and
"if (!vport->q_vector_idxs)" in the code could fail if they are not
nullified.

Tested: built and booted the kernel.

Fixes: 83f38f210b85 ("idpf: Fix RSS LUT NULL pointer crash on early ethtool 
operations")
Fixes: 8a558cbda51b ("idpf: fix potential memory leak on kcalloc() failure")
Signed-off-by: Li Li <boo...@google.com>
---
 drivers/net/ethernet/intel/idpf/idpf_lib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/idpf/idpf_lib.c 
b/drivers/net/ethernet/intel/idpf/idpf_lib.c
index 131a8121839bd..7af4214ec44de 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_lib.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c
@@ -1308,8 +1308,10 @@ static struct idpf_vport *idpf_vport_alloc(struct 
idpf_adapter *adapter,
 
 free_rss_key:
        kfree(rss_data->rss_key);
+       rss_data->rss_key = NULL;
 free_vector_idxs:
        kfree(vport->q_vector_idxs);
+       vport->q_vector_idxs = NULL;
 free_vport:
        kfree(vport);
 
-- 
2.52.0.457.g6b5491de43-goog