media: vidtv: remove an impossible condition

As warned by smatch:

	drivers/media/test-drivers/vidtv/vidtv_psi.c:93 vidtv_psi_update_version_num() warn: impossible condition '(h->version > 32) => (0-31 > 32)'

h_version is declared as:

		u8  version:5;

Meaning that its value ranges from 0 to 31. Incrementing 31 on such
data will overflow to zero, as expected.

So, just drop the uneeded overflow check.

While here, use "foo++" instead of "++foo", as this is a much
more common pattern.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/test-drivers/vidtv/vidtv_psi.c

@@ -89,9 +89,7 @@ static inline u32 dvb_crc32(u32 crc, u8 *data, u32 len)
 
 static void vidtv_psi_update_version_num(struct vidtv_psi_table_header *h)
 {
-	++h->version;
-	if (h->version > MAX_VERSION_NUM)
-		h->version = 0;
+	h->version++;
 }
 
 static inline u16 vidtv_psi_sdt_serv_get_desc_loop_len(struct vidtv_psi_table_sdt_service *s)