Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index a0e05ef..8512b5c 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -1083,7 +1083,7 @@
 		}
 		break;
 	case FSF_SBAL_MISMATCH:
-		/* should never occure, avoided in zfcp_fsf_send_els */
+		/* should never occur, avoided in zfcp_fsf_send_els */
 		/* fall through */
 	default:
 		req->status |= ZFCP_STATUS_FSFREQ_ERROR;