sh: Bump up dma_ops initialization far earlier in the boot process.

Presently this was tacked on to the dma debug init bits from
fs_initcall(), which is far too late for devices setting up their own
per-device coherent areas.

Throw this in the beginning of mem_init(), as per the x86 iommu
allocation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/mm/consistent.c

@@ -27,8 +27,6 @@ EXPORT_SYMBOL(dma_ops);
 static int __init dma_init(void)
 {
 	dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
-
-	no_iommu_init();
 	return 0;
 }
 fs_initcall(dma_init);