soc: fsl: qbman: check kzalloc return value

commit  142a245ddfeef726d0adeeb1ba02e64465ab5c31 from
https://github.com/nxp-imx/linux-imx lf-6.1.y

Check the return value of kzalloc and return in case of error.

Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>