Simplify this function implementation by using a known function.

Generated by: scripts/coccinelle/api/ptr_ret.cocci

[mkp: applied by hand]

Link: https://lore.kernel.org/r/9e667f19-434e-ed30-78cb-9ddc6323c51e@web.deSigned-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>