EISA: Delete error message for a failed memory allocation in eisa_probe()

Omit extra message for a memory allocation failure in probe function.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Marc Zyngier <maz@misterjones.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>