x86/pat, mm: Make track_pfn_insert() return void

It only returns 0 so we can save us the testing of its retval
everywhere.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: mcgrof@suse.com
Cc: dri-devel@lists.freedesktop.org
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dan.j.williams@intel.com
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/20161026174839.rusfxkm3xt4ennhe@pd.tnic
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index cdcd25c..113aaa4 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -737,8 +737,9 @@ int vmf_insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr,
 
 	if (addr < vma->vm_start || addr >= vma->vm_end)
 		return VM_FAULT_SIGBUS;
-	if (track_pfn_insert(vma, &pgprot, pfn))
-		return VM_FAULT_SIGBUS;
+
+	track_pfn_insert(vma, &pgprot, pfn);
+
 	insert_pfn_pmd(vma, addr, pmd, pfn, pgprot, write);
 	return VM_FAULT_NOPAGE;
 }