Based on the provided code snippet and the information that there's a CWE-125 (Out-of-bounds Read) vulnerability on line 3, here are five possible patches to address the issue:

Patch 1: Add bounds checking for sta_id
```c
3 if (sta_id < IWL_MVM_STATION_COUNT) {
4     int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
5 } else {
6     return -EINVAL;
7 }
```

Patch 2: Use a safer function with built-in bounds checking
```c
3 int ret = iwl_mvm_mld_rm_sta_from_fw_safe(mvm, sta_id, IWL_MVM_STATION_COUNT);
```

Patch 3: Implement a macro for bounds checking
```c
1 #define IS_VALID_STA_ID(id) ((id) < IWL_MVM_STATION_COUNT)
2 
3 if (IS_VALID_STA_ID(sta_id)) {
4     int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
5 } else {
6     return -ERANGE;
7 }
```

Patch 4: Use assert for debug builds and runtime check for release
```c
3 #ifdef DEBUG
4     assert(sta_id < IWL_MVM_STATION_COUNT);
5 #else
6     if (sta_id >= IWL_MVM_STATION_COUNT)
7         return -ERANGE;
8 #endif
9 int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
```

Patch 5: Modify the function signature to accept a size parameter
```c
1 int iwl_mvm_mld_rm_sta_id(struct iwl_mvm *mvm, u8 sta_id, size_t max_sta_id)
2 {
3     if (sta_id < max_sta_id) {
4         int ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
5     } else {
6         return -EINVAL;
7     }
```

Note: These patches assume the existence of a constant `IWL_MVM_STATION_COUNT` that defines the maximum number of stations. If this constant doesn't exist, you would need to define it or use an appropriate value.