[PATCH] check_partition(): fix error check

Fix inverted check introduced in 57881dd9df40b76dc7fc6a0d13fd75f337accb32 "Fix
check_partition routines".

Signed-off-by: Suzuki K P <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/partitions/check.c

···
 	}
 	if (res > 0)
 		return state;
-	if (!err)
+	if (err)
 	/* The partition is unrecognized. So report I/O errors if there were any */
 		res = err;
 	if (!res)