[2.4] Fix memleak on error exit path in sk98 driver.

Hello!

There is a trivial memleak in sk98 ioctl handling routinue, the patch is also trivial. Please apply.
Found with help of smatch.

===== drivers/net/sk98lin/skge.c 1.14 vs edited =====

drivers/net/sk98lin/skge.c +6 -5

@@ -3616,20 +3616,21 @@
 			Length = sizeof(pAC->PnmiStruct) + HeaderLength;
 		}
 		if (NULL == (pMemBuf = kmalloc(Length, GFP_KERNEL))) {
-			return -EFAULT;
+			return -ENOMEM;
 		}
 		if(copy_from_user(pMemBuf, Ioctl.pData, Length)) {
-			return -EFAULT;
+			goto fault;
 		}
 		if ((Ret = SkPnmiGenIoctl(pAC, pAC->IoBase, pMemBuf, &Length, 0)) < 0) {
-			return -EFAULT;
+			goto fault;
 		}
 		if(copy_to_user(Ioctl.pData, pMemBuf, Length) ) {
-			return -EFAULT;
+			goto fault;
 		}
 		Ioctl.Len = Length;
 		if(copy_to_user(rq->ifr_data, &Ioctl, sizeof(SK_GE_IOCTL))) {
-			return -EFAULT;
+fault:
+			Err = -EFAULT;
 		}
 		kfree(pMemBuf); /* cleanup everything */
 		break;

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