qede: fix write to free'd pointer error and double free of ptp
The err2 error return path calls qede_ptp_disable that cleans up on an error and frees ptp. After this, the free'd ptp is dereferenced when ptp->clock is set to NULL and the code falls-through to error path err1 that frees ptp again. Fix this by calling qede_ptp_disable and exiting via an error return path that does not set ptp->clock or kfree ptp. Addresses-Coverity: ("Write to pointer after free") Fixes: 03574497 ("qede: Add support for PTP resource locking.") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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