staging: lustre: test for proper errno code in lstcon_rpc_trans_abort

The error value returned will be -ETIMEDOUT not ETIMEDOUT. This fixes
a typo that prevents us from handling the error case.

Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>