qcacld-3.0: free the skb if osif_vdev_sync_op_start failed

If osif_vdev_sync_op_start failed, that means operation on
net_dev is not permitted. So, free the skb before return.

Change-Id: Icd366c2d9d947e39f26f1b21878bfe0154a55fdc
CRs-Fixed: 2681018
2 files changed