media: dvb-frontends: delete jump targets

* Return directly after a call of the function "kzalloc" failed
at the beginning.

* Move a bit of exception handling code into an if branch.

* Delete jump targets which became unnecessary with this refactoring.

Signed-off-by: Markus Elfring <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/dvb-frontends/cx24113.c

···
 	int rc;
 
 	if (!state)
-		goto error;
+		return NULL;
 
 	/* setup the state */
 	state->config = config;

drivers/media/dvb-frontends/cx24116.c

···
 	u8 *buf;
 
 	buf = kmalloc(len + 1, GFP_KERNEL);
-	if (buf == NULL) {
-		ret = -ENOMEM;
-		goto error;
-	}
+	if (!buf)
+		return -ENOMEM;
 
 	*(buf) = reg;
 	memcpy(buf + 1, data, len);
···
 		ret = -EREMOTEIO;
 	}
 
-error:
 	kfree(buf);
 
 	return ret;
···
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
-		goto error1;
+		return NULL;
 
 	state->config = config;
 	state->i2c = i2c;
···
 	ret = (cx24116_readreg(state, 0xFF) << 8) |
 		cx24116_readreg(state, 0xFE);
 	if (ret != 0x0501) {
+		kfree(state);
 		printk(KERN_INFO "Invalid probe, probably not a CX24116 device\n");
-		goto error2;
+		return NULL;
 	}
 
 	/* create dvb_frontend */
···
 		sizeof(struct dvb_frontend_ops));
 	state->frontend.demodulator_priv = state;
 	return &state->frontend;
-
-error2: kfree(state);
-error1: return NULL;
 }
 EXPORT_SYMBOL(cx24116_attach);
 

drivers/media/dvb-frontends/ds3000.c

···
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
-		goto error2;
+		return NULL;
 
 	state->config = config;
 	state->i2c = i2c;
···
 	/* check if the demod is present */
 	ret = ds3000_readreg(state, 0x00) & 0xfe;
 	if (ret != 0xe0) {
+		kfree(state);
 		printk(KERN_ERR "Invalid probe, probably not a DS3000\n");
-		goto error3;
+		return NULL;
 	}
 
 	printk(KERN_INFO "DS3000 chip version: %d.%d attached.\n",
···
 	 */
 	ds3000_set_voltage(&state->frontend, SEC_VOLTAGE_OFF);
 	return &state->frontend;
-
-error3:
-	kfree(state);
-error2:
-	return NULL;
 }
 EXPORT_SYMBOL(ds3000_attach);
 

drivers/media/dvb-frontends/mb86a20s.c

···
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
-		goto error;
+		return NULL;
 
 	/* setup the state */
 	state->config = config;
···
 
 	/* Check if it is a mb86a20s frontend */
 	rev = mb86a20s_readreg(state, 0);
-
-	if (rev == 0x13) {
-		dev_info(&i2c->dev,
-			 "Detected a Fujitsu mb86a20s frontend\n");
-	} else {
+	if (rev != 0x13) {
+		kfree(state);
 		dev_dbg(&i2c->dev,
 			"Frontend revision %d is unknown - aborting.\n",
 		       rev);
-		goto error;
+		return NULL;
 	}
 
+	dev_info(&i2c->dev, "Detected a Fujitsu mb86a20s frontend\n");
 	return &state->frontend;
-
-error:
-	kfree(state);
-	return NULL;
 }
 EXPORT_SYMBOL(mb86a20s_attach);