Revert "gpu: ion: Modify zeroing code so it only allocates address space once"
Revert "gpu: ion: Modify zeroing code so it only allocates address space once"

This reverts commit f9838613a5e2802beed4e4476599eccd59169b58.

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas