Revert "lib/scatterlist: error handling in __sg_alloc_table()"

This reverts commit 0d6c4f57b5cc97a6182169753b7ebd2ec5386784.
Revert "3.4.78"

This reverts commit fa344c95beec6b72e342f2fd593d57ecade80acb.
Revert "3.4.87"

This reverts commit dcd8a22d2def49e57f9ccbef1e717632a372cd83.
misc adjustments
3.4.87