media: dvb-frontends/stv0367: remove redundant variable ADCClk_Hz

GIT_AUTHOR_NAME=Colin King
GIT_AUTHOR_EMAIL=colin.king@canonical.com

Variable ADCClk_Hz is being initialised with a variable that is never read
and then re-assigned immediately afterwards. Clean up the code by removing
it and just returning the return value from the call to stv0367cab_get_mclk

Addresses-Coverity: ("Unused value")

Link: https://lore.kernel.org/linux-media/20211014153253.63527-1-colin.king@canonical.com

Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/dvb-frontends/stv0367.c

@@ -1797,11 +1797,7 @@ static u32 stv0367cab_get_mclk(struct dvb_frontend *fe, u32 ExtClk_Hz)
 
 static u32 stv0367cab_get_adc_freq(struct dvb_frontend *fe, u32 ExtClk_Hz)
 {
-	u32 ADCClk_Hz = ExtClk_Hz;
-
-	ADCClk_Hz = stv0367cab_get_mclk(fe, ExtClk_Hz);
-
-	return ADCClk_Hz;
+	return stv0367cab_get_mclk(fe, ExtClk_Hz);
 }
 
 static enum stv0367cab_mod stv0367cab_SetQamSize(struct stv0367_state *state,