Q: Given the following code slice:
```
1 int iwl_mvm_mld_rm_sta_id(struct iwl_mvm *mvm, u8 sta_id)
2 {
3 	int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
4 
5 	lockdep_assert_held(&mvm->mutex);
6 
7 	RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
8 	RCU_INIT_POINTER(mvm->fw_id_to_link_sta[sta_id], NULL);
9 	return ret;
10 }
11 
12 void iwl_mvm_mld_sta_modify_disable_tx(struct iwl_mvm *mvm,
```
which has a vulnerability among CWE-125 and among lines:
```
3 	int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
```
Please generate five possible patches for the vulnerability.