run: dont check for panic if executable failed

run

@@ -382,6 +382,9 @@ if [ -z "$debug_vm" ]; then
 fi
 "${common_root_dir}/eeval" "$cmd" "${common_run_dir}/run.sh"
 cmd_out=$?
+if [ "$cmd_out" -ne 0 ]; then
+  exit "$cmd_out"
+fi
 
 # Check if guest panicked.
 if "$common_gem5"; then
@@ -396,4 +399,3 @@ if grep -E -e "$panic_msg" -q "$common_termout_file"; then
   echo 'Simulation error detected by parsing logs. Exiting with status 1.'
   exit 1
 fi
-exit "$cmd_out"