scatterlist: reorder compound boolean expression

Test the cheaper boolean expression with no side effects first.

Link: http://lkml.kernel.org/r/1486040150-14109-2-git-send-email-gilad@benyossef.comSigned-off-by: NGilad Ben-Yossef <gilad@benyossef.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: <ofir.drang@arm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

lib/scatterlist.c

@@ -666,7 +666,7 @@ size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
 
 	local_irq_save(flags);
 
-	while (sg_miter_next(&miter) && offset < buflen) {
+	while ((offset < buflen) && sg_miter_next(&miter)) {
 		unsigned int len;
 
 		len = min(miter.length, buflen - offset);