Add handling for wrong MTP driver path

Add handling for wrong MTP driver path which triggers NULL Pointer exception.

Bug: 271525755
Bug: 278722702
Test: SANITIZE_TARGET=hwaddress make ${FUZZER_NAME} && adb sync data && adb shell /data/fuzz/$(get_build_var TARGET_ARCH)/${FUZZER_NAME}/${FUZZER_NAME}
Change-Id: Iac54ca36bd749aa7763217ac637790551b0a8658