V4L/DVB (9441): Code simplification: clock is already initialized, no need to initialize again.

Thanks to Marko Schluessler <marco@lordzodiac.de> for pointing it out
Signed-off-by: Marko Schluessler <marco@lordzodiac.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/stb0899_drv.c

@@ -550,7 +550,7 @@ int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data)
  */
 static u32 stb0899_get_mclk(struct stb0899_state *state)
 {
-	u32 mclk = 90000000, div = 0;
+	u32 mclk = 0, div = 0;
 
 	div = stb0899_read_reg(state, STB0899_NCOARSE);
 	mclk = (div + 1) * state->config->xtal_freq / 6;