metadata: Use proper function for freeing memory
a_req is allocated using env_vmalloc() so we need to free it
using env_vfree(), not env_free().
@@ -422,7 +422,7 @@ static int metadata_io_i_asynch(ocf_cache_t cache, ocf_queue_t queue, int dir,
compl_hndl(cache, context, a_req->error);
if (env_atomic_dec_return(&a_req->req_active) == 0)
- env_free(a_req);
+ env_vfree(a_req);
return 0;
