Simplify. NFC.

updateAArch64Add takes care of masking.

llvm-svn: 271524
diff --git a/lld/ELF/Target.cpp b/lld/ELF/Target.cpp
index e759727..9aef608 100644
--- a/lld/ELF/Target.cpp
+++ b/lld/ELF/Target.cpp
@@ -1281,10 +1281,10 @@
     break;
   case R_AARCH64_TLSLE_ADD_TPREL_HI12:
     checkInt<24>(Val, Type);
-    updateAArch64Add(Loc, (Val & 0xFFF000) >> 12);
+    updateAArch64Add(Loc, Val >> 12);
     break;
   case R_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
-    updateAArch64Add(Loc, Val & 0xFFF);
+    updateAArch64Add(Loc, Val);
     break;
   default:
     fatal("unrecognized reloc " + Twine(Type));