MIPS: Add an unreachable return statement to satisfy buggy GCCs.

It was reported that GCC-4.3.3 (with CodeSourcery extensions) fails
without this.

Reported-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2010/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 083d341..04f9e17 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -109,6 +109,8 @@
 static int scratchpad_offset(int i)
 {
 	BUG();
+	/* Really unreachable, but evidently some GCC want this. */
+	return 0;
 }
 #endif
 /*