[PATCH net] mcs7780: Silence uninitialized variable warning

[Dan Carpenter]

My static checker complains that, if the allocation in mcs_get_reg()
fails, it means we use "rval" without initializing it.  Small
allocations never fail in current kernels so it's not a major concern
but it's simple enough to silence the warning.

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/net/irda/mcs7780.c b/drivers/net/irda/mcs7780.c
index 765de3bedb88..64b29880e534 100644
--- a/drivers/net/irda/mcs7780.c
+++ b/drivers/net/irda/mcs7780.c
@@ -585,7 +585,7 @@ static int mcs_speed_change(struct mcs_cb *mcs)
        int rst = 0;
        int cnt = 0;
        __u16 nspeed;
-       __u16 rval;
+       __u16 rval = -1;
 
        nspeed = mcs_speed_set[(mcs->new_speed >> 8) & 0x0f];