staging/csr: remove the initialisation of interfaceTag and its comment in handle_bh_error

the interfaceTag is actually initialised in for loop of this function
and its not needed to initialise it before for loop.

and also remove the comment that is obvious about this variable.

Cc: Mikko Virkkilä <[e-mail]>
Cc: Lauri Hintsala <[e-mail]>
Cc: Riku Mettälä <[e-mail]>
Cc: Veli-Pekka Peltola <[e-mail]>
Signed-off-by: Devendra Naga <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/csr/bh.c

···
 handle_bh_error(unifi_priv_t *priv)
 {
     u8 conf_param = CONFIG_IND_ERROR;
-    u8 interfaceTag = 0; /* used as a loop counter */
+    u8 interfaceTag;
 
 
     /* Block unifi_run_bh() until the error has been handled. */