When kzalloc() fails the core MM will already complain about it, so there is
no need to have the error message locally.

Remove the unneeded error message.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>