ata: libahci: Clean-up the ahci_platform_en/disable_phys functions
ata: libahci: Clean-up the ahci_platform_en/disable_phys functions

The phy_ functions handle the NULL pointer case, so there is no need
to skip them if there is a NULL pointer. Moreover, after the error
label there is already no check on the pointer. This patch removes the
unnecessary tests and brings some consistency.

Signed-off-by: Gregory CLEMENT <cd8db494d8ed74d7c3f56ec5c769dff3d51dd397@free-electrons.com>
Acked-by: Hans de Goede <9fa1be1a5b5729e4c6b404f34c9ce49ff4882fd8@redhat.com>
Signed-off-by: Tejun Heo <546b05909706652891a87f7bfe385ae147f61f91@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs