RISC-V: Add comment for previous change.

bfd/
	* elfnn-riscv.c (riscv_elf_relocate_section): Add comment for previous
	change.

bfd/ChangeLog

@@ -1,3 +1,8 @@
+2018-02-08  Jim Wilson  <jimw@sifive.com>
+
+	* elfnn-riscv.c (riscv_elf_relocate_section): Add comment for previous
+	change.
+
 2018-02-08  Nick Clifton  <nickc@redhat.com>
 
 	PR 22788

bfd/elfnn-riscv.c

@@ -2253,6 +2253,8 @@ riscv_elf_relocate_section (bfd *output_bfd,
       if (msg)
 	info->callbacks->warning
 	  (info, msg, name, input_bfd, input_section, rel->r_offset);
+      /* We already reported the error via a callback, so don't try to report
+	 it again by returning false.  That leads to spurious errors.  */
       ret = TRUE;
       goto out;
     }