[PATCH -next] w1: w1_therm: fix build warning in w1_seq_show()

[Yang Yingliang]

Fix the following build warning:

  drivers/w1/slaves/w1_therm.c: In function ‘w1_seq_show’:
  drivers/w1/slaves/w1_therm.c:2059:6: warning: variable ‘rv’ set but not used [-Wunused-but-set-variable]
    int rv;
        ^~

Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
 drivers/w1/slaves/w1_therm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index a284da567ff9..ca70c5f03206 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -2056,7 +2056,6 @@ static ssize_t w1_seq_show(struct device *device,
 {
 	struct w1_slave *sl = dev_to_w1_slave(device);
 	ssize_t c = PAGE_SIZE;
-	int rv;
 	int i;
 	u8 ack;
 	u64 rn;
@@ -2084,7 +2083,7 @@ static ssize_t w1_seq_show(struct device *device,
 			goto error;
 
 		w1_write_8(sl->master, W1_42_COND_READ);
-		rv = w1_read_block(sl->master, (u8 *)&rn, 8);
+		w1_read_block(sl->master, (u8 *)&rn, 8);
 		reg_num = (struct w1_reg_num *) &rn;
 		if (reg_num->family == W1_42_FINISHED_BYTE)
 			break;
-- 
2.25.1