crypto: cavium - fix leak on curr if curr->head fails to be allocated

The exit path when curr->head cannot be allocated fails to kfree the
earlier allocated curr. Fix this by kfree'ing it.

Signed-off-by: Colin Ian King <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/cavium/cpt/cptvf_main.c

···
 			if (!curr->head) {
 				dev_err(&pdev->dev, "Command Q (%d) chunk (%d) allocation failed\n",
 					i, queue->nchunks);
+				kfree(curr);
 				goto cmd_qfail;
 			}