[media] stk1160: Check return value of stk1160_read_reg() in stk1160_i2c_read_reg()

Remember to collect the exit status from 'stk1160_read_reg()' in 'rc'
before testing it for less than zero.

Signed-off-by: Jesper Juhl <[e-mail]>
Acked-by: Ezequiel Garcia <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/usb/stk1160/stk1160-i2c.c

···
 	if (rc < 0)
 		return rc;
 
-	stk1160_read_reg(dev, STK1160_SBUSR_RD, value);
+	rc = stk1160_read_reg(dev, STK1160_SBUSR_RD, value);
 	if (rc < 0)
 		return rc;