snagrecover: am335x_usb_setup.sh: start recovery shell in current dir

Make sure that the recovery shell doesn't change the current directory to
something else.

Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>

src/snagrecover/am335x_usb_setup.sh

@@ -193,7 +193,8 @@ printf "Logging user %s into new shell\n" "$SUDOER"
 echo "===== $NETNS_NAME ====="
 echo "You can now setup the board and run the recovery tool."
 echo "Please type 'exit' to delete the namespace, stop the polling process and leave the shell when you are done."
-SUDO_PS1='(am335_recovery) \u@\h:\w \$' ip netns exec "$NETNS_NAME" sudo -i -u "$SUDOER" sh
+
+echo "cd $(pwd); exec </dev/tty" | SUDO_PS1='(am335_recovery) \u@\h:\w \$' ip netns exec "$NETNS_NAME" sudo -i -u "$SUDOER" sh -i
 
 #leave shell and cleanup
 cleanup