m68k: mm: Remove superfluous memblock_alloc*() casts

The return type of memblock_alloc*() is a void pointer, so there is no
need to cast it to "void *" or some other pointer type, before assigning
it to a pointer variable.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Greg Ungerer <gerg@linux-m68k.org>
Link: https://lore.kernel.org/r/20200826130444.25618-1-geert@linux-m68k.org

arch/m68k/mm/mcfmmu.c

@@ -42,7 +42,7 @@ void __init paging_init(void)
 	unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 };
 	int i;
 
-	empty_zero_page = (void *) memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+	empty_zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
 	if (!empty_zero_page)
 		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
 		      __func__, PAGE_SIZE, PAGE_SIZE);

arch/m68k/mm/motorola.c

@@ -227,7 +227,7 @@ static pte_t * __init kernel_page_table(void)
 	pte_t *pte_table = last_pte_table;
 
 	if (PAGE_ALIGNED(last_pte_table)) {
-		pte_table = (pte_t *)memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
+		pte_table = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
 		if (!pte_table) {
 			panic("%s: Failed to allocate %lu bytes align=%lx\n",
 					__func__, PAGE_SIZE, PAGE_SIZE);
@@ -275,8 +275,7 @@ static pmd_t * __init kernel_ptr_table(void)
 
 	last_pmd_table += PTRS_PER_PMD;
 	if (PAGE_ALIGNED(last_pmd_table)) {
-		last_pmd_table = (pmd_t *)memblock_alloc_low(PAGE_SIZE,
-							   PAGE_SIZE);
+		last_pmd_table = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE);
 		if (!last_pmd_table)
 			panic("%s: Failed to allocate %lu bytes align=%lx\n",
 			      __func__, PAGE_SIZE, PAGE_SIZE);