drivers: net: wan: lmc: Fix W=1 set but used variable warnings

drivers/net/wan/lmc/lmc_main.c: In function ‘lmc_ioctl’:
drivers/net/wan/lmc/lmc_main.c:356:25: warning: variable ‘mii’ set but not used [-Wunused-but-set-variable]
  356 |                     u16 mii;
      |                         ^~~
drivers/net/wan/lmc/lmc_main.c:427:25: warning: variable ‘mii’ set but not used [-Wunused-but-set-variable]
  427 |                     u16 mii;
      |                         ^~~
drivers/net/wan/lmc/lmc_main.c: In function ‘lmc_interrupt’:
drivers/net/wan/lmc/lmc_main.c:1188:9: warning: variable ‘firstcsr’ set but not used [-Wunused-but-set-variable]
 1188 |     u32 firstcsr;

This file has funky indentation, and makes little use of tabs. Keep
with this style in the patch, but that makes checkpatch unhappy.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201031181417.1081511-1-andrew@lunn.chSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/wan/lmc/lmc_main.c

@@ -353,9 +353,8 @@ int lmc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
             switch(xc.command){
             case lmc_xilinx_reset: /*fold02*/
                 {
-                    u16 mii;
 		    spin_lock_irqsave(&sc->lmc_lock, flags);
-                    mii = lmc_mii_readreg (sc, 0, 16);
+                    lmc_mii_readreg (sc, 0, 16);
 
                     /*
                      * Make all of them 0 and make input
@@ -424,10 +423,9 @@ int lmc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
                 break;
             case lmc_xilinx_load_prom: /*fold02*/
                 {
-                    u16 mii;
                     int timeout = 500000;
 		    spin_lock_irqsave(&sc->lmc_lock, flags);
-                    mii = lmc_mii_readreg (sc, 0, 16);
+                    lmc_mii_readreg (sc, 0, 16);
 
                     /*
                      * Make all of them 0 and make input
@@ -1185,7 +1183,6 @@ static irqreturn_t lmc_interrupt (int irq, void *dev_instance) /*fold00*/
     int i;
     s32 stat;
     unsigned int badtx;
-    u32 firstcsr;
     int max_work = LMC_RXDESCS;
     int handled = 0;
 
@@ -1203,8 +1200,6 @@ static irqreturn_t lmc_interrupt (int irq, void *dev_instance) /*fold00*/
         goto lmc_int_fail_out;
     }
 
-    firstcsr = csr;
-
     /* always go through this loop at least once */
     while (csr & sc->lmc_intrmask) {
 	handled = 1;