[elf_loader] Fix bug w/ status check

Author: derzhavin3016

src/elf_loader.cc

@@ -7,7 +7,7 @@ namespace hsim {
 void ElfLoader::load(Memory &memory) {
     ELFIO::elfio reader{};
 
-    if (reader.load(m_path))
+    if (!reader.load(m_path))
         throw std::invalid_argument("Bad ELF path: " + m_path.string());
 
     if (reader.get_encoding() != ELFIO::ELFDATA2LSB) {