Noticed by Coverity
Reported-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NBALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

This is a common generic PCI SATA controller that is also used in PCs
but more importantly guests running on the Sam460ex board prefer this
card and have a driver for it (unlike for other SATA controllers
already emulated).
Signed-off-by: NBALATON Zoltan <balaton@eik.bme.hu>
Acked-by: NJohn Snow <jsnow@redhat.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>