Atheros, atl2: Fix mem leaks in error paths of atl2_set_eeprom

We leak in some error paths of drivers/net/atlx/atl2.c:atl2_set_eeprom().
The memory allocated to 'eeprom_buff' is not freed when we return -EIO.
This patch fixes that up and also removes a pointless explicit cast.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 8 deletions

diff --git a/drivers/net/atlx/atl2.c b/drivers/net/atlx/atl2.c
index e637e9f28fd4..937ef1afa5db 100644
--- a/drivers/net/atlx/atl2.c
+++ b/drivers/net/atlx/atl2.c
@@ -1996,13 +1996,15 @@ static int atl2_set_eeprom(struct net_device *netdev,
         if (!eeprom_buff)
                 return -ENOMEM;
 
-        ptr = (u32 *)eeprom_buff;
+        ptr = eeprom_buff;
 
         if (eeprom->offset & 3) {
                 /* need read/modify/write of first changed EEPROM word */
                 /* only the second byte of the word is being modified */
-                if (!atl2_read_eeprom(hw, first_dword*4, &(eeprom_buff[0])))
-                        return -EIO;
+                if (!atl2_read_eeprom(hw, first_dword*4, &(eeprom_buff[0]))) {
+                        ret_val = -EIO;
+                        goto out;
+                }
                 ptr++;
         }
         if (((eeprom->offset + eeprom->len) & 3)) {
@@ -2011,18 +2013,22 @@ static int atl2_set_eeprom(struct net_device *netdev,
                  * only the first byte of the word is being modified
                  */
                 if (!atl2_read_eeprom(hw, last_dword * 4,
-                        &(eeprom_buff[last_dword - first_dword])))
-                        return -EIO;
+                                        &(eeprom_buff[last_dword - first_dword]))) {
+                        ret_val = -EIO;
+                        goto out;
+                }
         }
 
         /* Device's eeprom is always little-endian, word addressable */
         memcpy(ptr, bytes, eeprom->len);
 
         for (i = 0; i < last_dword - first_dword + 1; i++) {
-                if (!atl2_write_eeprom(hw, ((first_dword+i)*4), eeprom_buff[i]))
-                        return -EIO;
+                if (!atl2_write_eeprom(hw, ((first_dword+i)*4), eeprom_buff[i])) {
+                        ret_val = -EIO;
+                        goto out;
+                }
         }
-
+ out:
         kfree(eeprom_buff);
         return ret_val;
 }