media: stv090x: Only print tuner lock if get_status is available

The current code doesn't report tuner lock properly if the
tuner get_status callback is not available, as reported by
smatch:
	drivers/media/dvb-frontends/stv090x.c:2220 stv090x_get_coldlock() error: uninitialized symbol 'reg'.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/dvb-frontends/stv090x.c

@@ -2215,13 +2215,12 @@ static int stv090x_get_coldlock(struct stv090x_state *state, s32 timeout_dmd)
 		if (state->config->tuner_get_status) {
 			if (state->config->tuner_get_status(fe, &reg) < 0)
 				goto err_gateoff;
+			if (reg)
+				dprintk(FE_DEBUG, 1, "Tuner phase locked");
+			else
+				dprintk(FE_DEBUG, 1, "Tuner unlocked");
 		}
 
-		if (reg)
-			dprintk(FE_DEBUG, 1, "Tuner phase locked");
-		else
-			dprintk(FE_DEBUG, 1, "Tuner unlocked");
-
 		if (stv090x_i2c_gate_ctrl(state, 0) < 0)
 			goto err;