wlan: On failure return -EINVAL in wlan_hdd_add_virtual_intf().

In wlan_hdd_add_virtual_intf() for failure conditions, return '-EINVAL'
instead of NULL, so that return value is handled appropriately in NL-
layer(nl80211_new_interface()).

Change-Id: I5ff4a9859a73abdeec7f525ac748fb1aa248bd30
CRs-Fixed: 684076
1 file changed
tree: b947aba2d95108cd304b8639f35f15c53ac7c802
  1. CORE/
  2. firmware_bin/
  3. riva/
  4. Android.mk
  5. Kbuild
  6. Kconfig