qcacld-3.0: Fix uninitialized var and dereference of freed ptr issue

This change fixes the use of uninitialized variable and dereference of
free pointer issue in host driver.

Change-Id: I88359cd383d15f9baa73bc7c3ce9d5fccee2a41e
CRs-Fixed: 3295234

components/mlme/core/src/wlan_mlme_main.c

@@ -285,6 +285,7 @@ mlme_peer_object_created_notification(struct wlan_objmgr_peer *peer,
 	if (QDF_IS_STATUS_ERROR(status)) {
 		mlme_legacy_err("unable to attach peer_priv obj to peer obj");
 		qdf_mem_free(peer_priv);
+		return status;
 	}
 
 	qdf_wake_lock_create(&peer_priv->peer_set_key_wakelock, "peer_set_key");