mtd: partitions: fixup some allocate_partition() whitespace

Some recent patches caused churn around this area, and checkpatch
noticed the existing issues.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

drivers/mtd/mtdpart.c

@@ -402,7 +402,7 @@ static struct mtd_part *allocate_partition(struct mtd_info *parent,
 			const struct mtd_partition *part, int partno,
 			uint64_t cur_offset)
 {
-	int wr_alignment = (parent->flags & MTD_NO_ERASE) ? parent->writesize:
+	int wr_alignment = (parent->flags & MTD_NO_ERASE) ? parent->writesize :
 							    parent->erasesize;
 	struct mtd_part *slave;
 	u32 remainder;