MIPS: Fix trailing semicolon

The trailing semicolon is an empty statement that does no operation.
Removing it since it doesn't do anything.

Fixes: d0f0f63a ("MIPS: Rewrite csum_fold to plain C.")
Signed-off-by: Luis de Bethencourt <luisbg@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18517/


Signed-off-by: James Hogan <jhogan@kernel.org>