Why was the swap partition allocated on the last partition of the disk with Red Hat Enterprise Linux 7 kickstart installation

Issue

• I installed Red Hat Enterprise Linux 7 on IBM Power server with the following partitioning scheme in kickstart file.

part prepboot --asprimary --fstype="PReP" --ondisk=disk/by-id/dm-uuid-mpath-xxxxxxxxxxxxxxxxxxx --size=4
part /boot --asprimary --fstype="ext2" --ondisk=disk/by-id/dm-uuid-mpath-xxxxxxxxxxxxxxxxxxx --size=512 --label=boot
part swap --asprimary --fstype="swap" --ondisk=disk/by-id/dm-uuid-mpath-xxxxxxxxxxxxxxxxxxx --size=8192
part pv.1 --asprimary --fstype="lvmpv" --ondisk=disk/by-id/dm-uuid-mpath-xxxxxxxxxxxxxxxxxxx --size=32251

• The installation completed successfully, but the swap partition was allocated on the last partition of the disk.

/dev/mapper/mpatha1   *        2048       10239        4096   41  PPC PReP Boot
/dev/mapper/mpatha2           10240     1058815      524288   83  Linux
/dev/mapper/mpatha3         1058816    67108863    33025024   8e  Linux LVM
/dev/mapper/mpatha4        67108864    83886079     8388608   82  Linux swap / Solaris

• Can we make it allocate the swap partition in the 3rd partition of the disk?