microblaze: Fix coding style issues

Fix coding style issues reported by checkpatch.pl.

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index d1c06d0..1888b0f 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -39,8 +39,6 @@
 #include <asm/sections.h>
 #include <asm/fixmap.h>
 
-#define flush_HPTE(X, va, pg)	_tlbie(va)
-
 unsigned long ioremap_base;
 unsigned long ioremap_bot;
 EXPORT_SYMBOL(ioremap_bot);
@@ -75,9 +73,8 @@
 		p >= memory_start && p < virt_to_phys(high_memory) &&
 		!(p >= virt_to_phys((unsigned long)&__bss_stop) &&
 		p < virt_to_phys((unsigned long)__bss_stop))) {
-		printk(KERN_WARNING "__ioremap(): phys addr "PTE_FMT
-			" is RAM lr %pf\n", (unsigned long)p,
-			__builtin_return_address(0));
+		pr_warn("__ioremap(): phys addr "PTE_FMT" is RAM lr %pf\n",
+			(unsigned long)p, __builtin_return_address(0));
 		return NULL;
 	}
 
@@ -128,9 +125,10 @@
 }
 EXPORT_SYMBOL(ioremap);
 
-void iounmap(void *addr)
+void iounmap(void __iomem *addr)
 {
-	if (addr > high_memory && (unsigned long) addr < ioremap_bot)
+	if ((__force void *)addr > high_memory &&
+					(unsigned long) addr < ioremap_bot)
 		vfree((void *) (PAGE_MASK & (unsigned long) addr));
 }
 EXPORT_SYMBOL(iounmap);
@@ -152,8 +150,7 @@
 		set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT,
 				__pgprot(flags)));
 		if (unlikely(mem_init_done))
-			flush_HPTE(0, va, pmd_val(*pd));
-			/* flush_HPTE(0, va, pg); */
+			_tlbie(va);
 	}
 	return err;
 }