Description: ice: Fix some null pointer dereference issues in ice_ptp.c
References:
Notes:
 carnil> Introduced in d938a8cca88a ("ice: Auxbus devices & driver for E822 TS").
 carnil> Vulnerable versions: 6.7-rc1.
Bugs:
upstream: released (6.8-rc1) [3027e7b15b02d2d37e3f82d6b8404f6d37e3b8cf]
6.7-upstream-stable: released (6.7.2) [3cd9b9bee33f39f6c6d52360fe381b89a7b12695]
6.6-upstream-stable: N/A "Vulnerable code not present"
6.1-upstream-stable: N/A "Vulnerable code not present"
5.10-upstream-stable: N/A "Vulnerable code not present"
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: N/A "Vulnerable code not present"
6.1-bookworm-security: N/A "Vulnerable code not present"
5.10-bullseye-security: N/A "Vulnerable code not present"
4.19-buster-security: N/A "Vulnerable code not present"