arch/sparc/include/asm/pgtable_64.h: fix build

A last-minute fixlet which I'd failed to merge at the appropriate time
had the predictable effect.

Fixes: f672e2c217e2d4b2 ("lib: untag user pointers in strn*_user")
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/sparc/include/asm/pgtable_64.h

@@ -1099,7 +1099,7 @@ static inline unsigned long __untagged_addr(unsigned long start)
 	return start;
 }
 #define untagged_addr(addr) \
-	((__typeof__(addr))(__untagged_addr((unsigned long)(addr)))
+	((__typeof__(addr))(__untagged_addr((unsigned long)(addr))))
 
 static inline bool pte_access_permitted(pte_t pte, bool write)
 {