[PATCH net-next] mac80211: fix error handling in ieee80211_register_hw()

[Wei Yongjun]

Fix to return a negative error code -ENOMEM from the kmemdup
error handling case instead of 0.

Fixes: 09b4a4faf9d0 ("mac80211: introduce capability flags for VHT EXT NSS 
support")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 net/mac80211/main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 7738101..e6375d0 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1203,8 +1203,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
                        continue;
 
                sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL);
-               if (!sband)
+               if (!sband) {
+                       result = -ENOMEM;
                        goto fail_rate;
+               }
 
                wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT 
NSS BW flag\n",
                          band);